Motion, Forces, and Energy Revision (Chapters 3+4)

Size: px
Start display at page:

Download "Motion, Forces, and Energy Revision (Chapters 3+4)"

Transcription

1 Motion, Forces, and Energy Revision (Chapters 3+4) What is force? The force exerted on a surface divided by the total area over which the force is exerted. What is the link between pressure & area? Pressure decreases as the area over which a force is distributed increases. The formula Pressure = N/m 2 = Pa (Pa = pascal) Force = N Area = m 2 Can you find the area by using the pressure & force? Yes. Area = force pressure. Can you find the force by using the pressure & area? Yes. Force = pressure X area. What is density? Its mass per unit volume. The formula Density = g/cm 3 Mass = g Volume = cm 3 What is Archimedes Principle? The buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces. What is Pascal s principle? When force is applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid. What is Bernoulli s principle? The speed of a moving fluid increases, the pressure within the fluid decreases. Changing Density If a submarine wants to make a dive, (point 1) the tanks are open so that water is taken into it. (point 2) the density of the submarine is greater than the buoyant force. The submarine s weight > the buoyant force.

2 If a submarine want to float, (point 1) the tanks are filled with water till its density is equal to the water. (poin2) meaning its weight equals the buoyant force. The submarine s weight = the buoyant force. If a submarine wants to make a rise, (point 1) compressed air is blown into the tanks which forces the water out. (point 2) the decrease density of the submarine makes its weight less than the buoyant force. The submarine s weight < the buoyant force. Question: look at the following graph then answer the questions: 1) What is the variable on the y-axis? Lifting Force. 2) What is the variable on the x-axis? Applied Force 3) What is the unit on the x-axis? Newton. 4) What is the unit on the y-axis? Newton. 5) How many lifts do we have? 3 lifts; lift A, B and C 6) For lift A: how much force is required to lift it when the applied force is 7500? N. 7) For lift C: how much force is required to lift it when the applied force is 5000? N 8) For lift B: how much force must be applied to lift a 4500 N lift? 5000 N. 9) For lift A: how much force must be applied to lift a N lift? 6000 N Question: A book applied a fore of 6 N on your desk, which occupied an area of 3 m 2. What is the pressure here?

3 Pressure = 6 3 = 2 Pa Pressure =? Force = 6 N Area = 3 m 2 Question: You calculated that water exerted a pressure of 8 Pa on 4 m 2 bottle. What is the force here? force = 8 X 4 = 32 N Force = Pressure X Area Look at the following densities. How would you know if they float or sink from first glance? Which floats & which sinks? Substance Density (g/cm 3 ) Wood 0.7 Water 1 Plastic 0.93 Glycerin 1.26 By taking water as my basis. Any substance > 1 g/cm 3 = sinks. Water is less dense here. Any substance < 1 g/cm 3 = floats. Water has more dense here. Floats = wood & plastic. Sinks = Glycerin. Based on the picture, answer the questions: A) B) Before we start (A), what is the object s weight? 10 kg. From (B) What is the weight of the object after being submerged? 7 kg.

4 What is the buoyant force against the object? 3 N. What is the dispersal liquid? 3kg What is the link between the dispersal here and the buoyant force? The buoyant force is equal to the dispersal's weight. What happened to the object s weight being decreased? Where did the rest of the weight go? When we submerged the clock, the buoyant force on the opposite direction pushed the object and that is why it appears to be here as 7. The dispersal liquid here is the missing weight of the object. That is why when we weigh them then added them together (object + dispersal) gives us the whole weight before the submerged. (normal weight) 10 = (submerged weight) 7 + (displaced weight) 3 Atmospheric pressure= N/cm 2 at sea level. The standard barometric pressure = millibars at sea level. Work: (point 1) the amount of work done on an object can be determined by multiplying force times distance. (point 2) [the formula] Work = Force X Distance (point 3) if there was force applied on an object, but there were no appeared distance. Then the work is not done. (point 4) work's unit is Joule (J) Work (J) = Force (N) X Distance (m) Power: (point 1) the amount of work done on an object in a unit of time. (point 2) [the formula] Power = Work Time (point 3) work's unit is watt (W) Power (W) = Work (J) Time (s) (point 4) watt is a small unit of power, so we use one kilowatt (KW) = 1000 watts. (point 5) when we want to talk about vehicles' engines using power, we use horsepower. 1 horsepower=746 W (not an SI unit) Question: What is the mechanical advantage of the bottle opener you used when the input force applied on to it is 5 N and the output force is 7 N. Input force = 5 N output force = 7 N MA= 7/5 = 1.4 (no units) Question: A crane was working with J and finished the work at J, what is the efficiency of the crane? Input work= J Output work= J efficiency = X 100% = X 100% = 84 % Question: you weight a metallic cup being 1.5 g and you had its density as 1.29 g/cm3. Calculate the volume of that cup. Density = Mass Volume Volume =? Density=1.29 g/cm 3 Mass=1.5g

5 Volume = Mass Density Volume = = 1.16 cm 3 Inclined + axe +wheel and axel Question: A man was pushing a shopping cart. He walked for 12 m and reached the top of the area which was 8 m height. What is the (ideal) mechanical advantage? Length of the incline plane = 12 m Height of the incline plane = 8 m Ideal MA = 12 8 = 1.5 (no units) Question: What is the mechanical advantage for the wheel and axle when the axle's radius is 2 cm and the wheel's radius is 10 cm. Radius of the wheel = 10 cm Radius of the axle = 2 cm MA = 10 2 = 5 (no units) Question: levers and pulleys have different types, what is the method of classifying or tell apart between each simple machine? Levers are based to the location of the fulcrum to the input and output forces. There are 3 types. While pulleys are based on fixed, movable. There are two types. The third is a joint between the two.

Chapter 9. Forces and Fluids

Chapter 9. Forces and Fluids Chapter 9 Forces and Fluids Key Terms hydraulic systems incompressible mass neutral buoyancy pascal pneumatic systems pressure unbalanced forces weight Archimedes principle average density balanced forces

More information

Chapter 13 Fluids. Copyright 2009 Pearson Education, Inc.

Chapter 13 Fluids. Copyright 2009 Pearson Education, Inc. Chapter 13 Fluids Phases of Matter Density and Specific Gravity Pressure in Fluids Atmospheric Pressure and Gauge Pressure Pascal s Principle Units of Chapter 13 Measurement of Pressure; Gauges and the

More information

Notes Chapter 3. Buoyancy

Notes Chapter 3. Buoyancy Notes Chapter 3 Buoyancy Pressure in a Fluid 3.2 Pressure and the Buoyant Forces Liquids and gases are fluids materials that can flow and have no definite shape. Objects in a fluid experience a buoyant

More information

Density and Buoyancy Notes

Density and Buoyancy Notes Density and Buoyancy Notes Measuring Mass and Volume 3.1 Density A balance can be used to measure the mass of an object. If the object is a liquid, pour it into a graduated cylinder to measure the volume.

More information

Unit 1 Lesson 5 Fluids and Pressure. Copyright Houghton Mifflin Harcourt Publishing Company

Unit 1 Lesson 5 Fluids and Pressure. Copyright Houghton Mifflin Harcourt Publishing Company Feel the Pressure! What are fluids? A fluid is any material that can flow and that takes the shape of its container. A fluid can flow because its particles easily move past each other. Liquids and gases,

More information

Grade 8 Science: Unit 2-Fluids Chapter 9: Force, Pressure Area

Grade 8 Science: Unit 2-Fluids Chapter 9: Force, Pressure Area Grade 8 Science: Unit 2-Fluids Chapter 9: Force, Pressure Area Key Terms: hydraulic systems, incompressible, mass, neutral buoyancy, pascal, pneumatic systems, pressure, unbalanced forces, weight, Archimedes

More information

Key Terms Chapter 7. boiling boiling point change of state concentration condensation deposition evaporation flow rate fluid freezing point

Key Terms Chapter 7. boiling boiling point change of state concentration condensation deposition evaporation flow rate fluid freezing point Foldable Activity Using the instructions on page 267 in your textbook on how to make foldables, write a key term on each front tab, and the definition on the inside (see example that I made up). You will

More information

2 Buoyant Force. TAKE A LOOK 2. Identify What produces buoyant force?

2 Buoyant Force. TAKE A LOOK 2. Identify What produces buoyant force? CHAPTER 3 2 Buoyant Force SECTION Forces in Fluids BEFORE YOU READ After you read this section, you should be able to answer these questions: What is buoyant force? What makes objects sink or float? How

More information

Science 8 Chapter 9 Section 1

Science 8 Chapter 9 Section 1 Science 8 Chapter 9 Section 1 Forces and Buoyancy (pp. 334-347) Forces Force: anything that causes a change in the motion of an object; a push or pull on an object balanced forces: the condition in which

More information

17.2 and 17.3 Classifying Matter Liquids. Liquids

17.2 and 17.3 Classifying Matter Liquids. Liquids 17.2 and 17.3 Classifying Matter Liquids Read p.295-301 in book Liquids Liquids have an indefinite shape, but a definite volume. the same shape as their container. particles that are close together, but

More information

Density and Specific Gravity

Density and Specific Gravity Fluids Phases of Matter Matter is anything that has mass and takes up space (volume). The three common phases of matter are solid, liquid, and gas. A solid has a definite shape and size. A liquid has a

More information

Name Class Date. (pp ) Write the letter of the correct answer in the space provided.

Name Class Date. (pp ) Write the letter of the correct answer in the space provided. Skills Worksheet Directed Reading A Section: Buoyancy and Density (pp. 412 419) 1. What is the upward force that fluids exert on all matter called? a. pascal force b. atmospheric pressure c. buoyant force

More information

Fluids always move from high pressure to low pressure. Air molecules pulled by gravity = atmospheric pressure

Fluids always move from high pressure to low pressure. Air molecules pulled by gravity = atmospheric pressure 9.1 Fluids Under Pressure Fluids always move from high pressure to low pressure w Fluids under pressure and compressed gases are used for a variety of everyday tasks Air molecules pulled by gravity = atmospheric

More information

Name: Date Due: Simple Machines. Physical Science Chapter 4

Name: Date Due: Simple Machines. Physical Science Chapter 4 Date Due: Simple Machines Physical Science Chapter 4 1 Work & Power 1. Define the following terms: a. work= b. joule= c. power= d. watt= e. horsepower= 2. When does a force do work? 3. If there is no movement,

More information

Section 3: Fluids. States of Matter Section 3. Preview Key Ideas Bellringer Pressure

Section 3: Fluids. States of Matter Section 3. Preview Key Ideas Bellringer Pressure Section 3: Fluids Preview Key Ideas Bellringer Pressure Buoyant Force Comparing Weight and Buoyant Force Pascal s Principle Math Skills Fluids in Motion Key Ideas How do fluids exert pressure? What force

More information

Mechanical Advantage 1

Mechanical Advantage 1 Mechanical Advantage 1 Mechanical Advantage Another Word for Leverage Ways of Making WORK easier or more efficient. 2 Work = Work * = Work = * * * 3 Mechanical Advantage Output Input 5 8 N = 1 4 5 8 N

More information

Chapter 9 Fluids and Buoyant Force

Chapter 9 Fluids and Buoyant Force Chapter 9 Fluids and Buoyant Force In Physics, liquids and gases are collectively called fluids. 3/0/018 8:56 AM 1 Fluids and Buoyant Force Formula for Mass Density density mass volume m V water 1000 kg

More information

Name. Student I.D.. Section:. Use g = 10 m/s 2

Name. Student I.D.. Section:. Use g = 10 m/s 2 Prince Sultan University Department of Mathematics & Physics SCI 101- General Sciences Second Exam Second Semester, Term 142 Wednesday 22/4/2015 Examination Time : 60 minutes Name. Student I.D.. Section:.

More information

PHYS 101 Previous Exam Problems

PHYS 101 Previous Exam Problems PHYS 101 Previous Exam Problems CHAPTER 14 Fluids Fluids at rest pressure vs. depth Pascal s principle Archimedes s principle Buoynat forces Fluids in motion: Continuity & Bernoulli equations 1. How deep

More information

Ch. 4 Motion in One direction Ch 6. Pressure in Fluids and Atmospheric Pressure Ch. 7. Up-thrust in Fluids Ch. 8. Floatation and Relative Density

Ch. 4 Motion in One direction Ch 6. Pressure in Fluids and Atmospheric Pressure Ch. 7. Up-thrust in Fluids Ch. 8. Floatation and Relative Density Ch. 4 Motion in One direction Ch 6. Pressure in Fluids and Atmospheric Pressure Ch. 7. Up-thrust in Fluids Ch. 8. Floatation and Relative Density Physics Class 9 th Copyright 10x10learning.com 1 Acceleration

More information

In the liquid phase, molecules can flow freely from position to position by sliding over one another. A liquid takes the shape of its container.

In the liquid phase, molecules can flow freely from position to position by sliding over one another. A liquid takes the shape of its container. In the liquid phase, molecules can flow freely from position to position by sliding over one another. A liquid takes the shape of its container. In the liquid phase, molecules can flow freely from position

More information

In the liquid phase, molecules can flow freely from position. another. A liquid takes the shape of its container. 19.

In the liquid phase, molecules can flow freely from position. another. A liquid takes the shape of its container. 19. In the liquid phase, molecules can flow freely from position to position by sliding over one another. A liquid takes the shape of its container. In the liquid phase, molecules can flow freely from position

More information

Review: Fluids. container into which it has been poured. changes gases are compressible. pressure changes

Review: Fluids. container into which it has been poured. changes gases are compressible. pressure changes Forces in Fluids Review: Fluids o A fluid is a substance that is able to flow and assume the form of the container into which it has been poured o A compressible fluid is one that can change its volume

More information

Chapter 10 Fluids. Which has a greater density? Ch 10: Problem 5. Ch 10: Problem Phases of Matter Density and Specific Gravity

Chapter 10 Fluids. Which has a greater density? Ch 10: Problem 5. Ch 10: Problem Phases of Matter Density and Specific Gravity Chapter 10 Fluids 10-1 Phases of Matter The three common phases of matter are solid, liquid, and gas. A solid has a definite shape and size. A liquid has a fixed volume but can be any shape. A gas can

More information

Fluids. How do fluids exert pressure? What causes objects to float? What happens when pressure in a fluid changes? What affects the speed of a fluid?

Fluids. How do fluids exert pressure? What causes objects to float? What happens when pressure in a fluid changes? What affects the speed of a fluid? CHAPTER 3 SECTION 3 States of Matter Fluids KEY IDEAS As you read this section, keep these questions in mind: How do fluids exert pressure? What causes objects to float? What happens when pressure in a

More information

Simple Machine Quiz Study Guide. Moving something with a force, or when a force is applied through a distance or energy transfer through motion.

Simple Machine Quiz Study Guide. Moving something with a force, or when a force is applied through a distance or energy transfer through motion. Name: Work- Simple Machine Quiz Study Guide 1.) What is one of the definitions for work? Moving something with a force, or when a force is applied through a distance or energy transfer through motion.

More information

Density. Chapters 12-14: Phases of Matter. Example: Density. Conceptual Check. Springs 2/27/12. Mass Density vs. Weight Density

Density. Chapters 12-14: Phases of Matter. Example: Density. Conceptual Check. Springs 2/27/12. Mass Density vs. Weight Density Chapters 12-14: Phases of Matter Density Sequence of increasing molecule motion (and kinetic energy) Solid Liquid Gas The densities of most liquids and solids vary slightly with changes in temperature

More information

L 13 Fluid Statics [2] More on fluids. How can a steel boat float. A ship can float in a cup of water! Today s weather

L 13 Fluid Statics [2] More on fluids. How can a steel boat float. A ship can float in a cup of water! Today s weather L 13 Fluid Statics [2] More on fluids. How can a steel boat float. A ship can float in a cup of water! Today s weather The deeper you go the higher the pressure P Top A hypothetical volume of water inside

More information

The density of a substance is the same for all samples of that substance.

The density of a substance is the same for all samples of that substance. 8.8.a Density and Buoyancy Students know density is mass per unit volume. P71 Wood Steel The density of a substance is the same for all samples of that substance. 1. The two blocks shown have the same

More information

Float a Big Stick. To investigate how objects float by analyzing forces acting on a floating stick

Float a Big Stick. To investigate how objects float by analyzing forces acting on a floating stick Chapter 19: Liquids Flotation 53 Float a Big Stick Purpose To investigate how objects float by analyzing forces acting on a floating stick Required Equipment/Supplies Experiment vernier calipers 250-mL

More information

Force Pressure = Area

Force Pressure = Area Topics Pressure Liquids Buoyancy Archimedes Principle Flotation Pascal;s Principle Surface Tension Capillarity Pressure Force Pressure = Area Which has the greatest pressure? Units: N/m 2 -- named the

More information

Unit A: Mix and Flow of Matter

Unit A: Mix and Flow of Matter Unit A: Mix and Flow of Matter Science 8 1 Section 3.0 THE PROPERTIES OF GASES AND LIQUIDS CAN BE EXPLAINED BY THE PARTICLE MODEL OF MATTER. 2 1 Viscosity and the Effects of Temperature Topic 3.1 3 Viscosity

More information

Simple Machines. Work (in) = Work (out)

Simple Machines. Work (in) = Work (out) Simple Machines Work (in) A simple machine uses a force to do work against a single load force. Ignoring friction losses, the work done on the load is equal to the work done by force Work (out) Work (in)

More information

DENSITY AND BUOYANCY

DENSITY AND BUOYANCY DENSITY AND BUOYANCY DENSITY - RECAP What is DENSITY? The amount of MASS contained in a given VOLUME Density describes how closely packed together the particles are in a substance Density Experiment SINK

More information

Lecture 20. Static fluids

Lecture 20. Static fluids Lecture 20 Static fluids Today s Topics: Density Pressure, Depth and Pressure Gauges Pascal s Principle Archimedes Principle Solids and Fluids Solids Maintain their shape. Generally don t flow Limited

More information

Fluid Mechanics - Hydrostatics. Sections 11 5 and 6

Fluid Mechanics - Hydrostatics. Sections 11 5 and 6 Fluid Mechanics - Hydrostatics Sections 11 5 and 6 A closed system If you take a liquid and place it in a system that is CLOSED like plumbing for example or a car s brake line, the PRESSURE is the same

More information

Fluids, Pressure and buoyancy

Fluids, Pressure and buoyancy Fluids, Pressure and buoyancy Announcements: CAPA due Friday at 10pm. Comment on the hint in Problem 5. CAPA solutions from previous sets can be found by logging onto CAPA and selecting View Previous Set

More information

Additional Information

Additional Information Buoyancy Additional Information Any object, fully or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object. Archimedes of Syracuse Archimedes principle

More information

Vacuum P=0. h=76 cm A B C. Barometer

Vacuum P=0. h=76 cm A B C. Barometer Recap: Pressure Pressure = Force per unit area (P = F /A; units: Pascals) Density of object = mass / volume (ρ = m /V; units: kg / m 3 ) Pascal s Law:Pressure is transmitted equally in all directions throughout

More information

Fluid Mechanics. Liquids and gases have the ability to flow They are called fluids There are a variety of LAWS that fluids obey

Fluid Mechanics. Liquids and gases have the ability to flow They are called fluids There are a variety of LAWS that fluids obey Fluid Mechanics Fluid Mechanics Liquids and gases have the ability to flow They are called fluids There are a variety of LAWS that fluids obey Density Regardless of form (solid, liquid, gas) we can define

More information

Phys101 Lectures Fluids I. Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle. Ref: 10-1,2,3,4,5,6,7.

Phys101 Lectures Fluids I. Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle. Ref: 10-1,2,3,4,5,6,7. Phys101 Lectures 21-22 Fluids I Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle Ref: 10-1,2,3,4,5,6,7. Page 1 10-1 Phases of Matter The three common phases of matter are solid,

More information

AP Physics B Ch 10 Fluids. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

AP Physics B Ch 10 Fluids. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Name: Period: Date: AP Physics B Ch 10 Fluids 1) The three common phases of matter are A) solid, liquid, and vapor. B) solid, plasma, and gas. C) condensate, plasma, and gas. D) solid, liquid, and gas.

More information

Clicker Question: Clicker Question: Clicker Question: Phases of Matter. Phases of Matter and Fluid Mechanics

Clicker Question: Clicker Question: Clicker Question: Phases of Matter. Phases of Matter and Fluid Mechanics Newton's Correction to Kepler's First Law The orbit of a planet around the Sun has the common center of mass (instead of the Sun) at one focus. A flaw in Copernicus s model for the solar system was A:

More information

Properties of Fluids. How do ships float?

Properties of Fluids. How do ships float? How do ships float? Despite their weight ships are able to float. This is because a greater force pushing up on the ship opposes the weight or force of the ship pushing down. How do ships float? This supporting

More information

PRESSURE AND BUOYANCY

PRESSURE AND BUOYANCY PRESSURE AND BUOYANCY CONCEPT SUMMARY So far The pressure applied to a confined liquid is transmitted to every point in the liquid (Pascal's Principle). At any given point in a liquid the pressure is the

More information

1. All fluids are: A. gases B. liquids C. gases or liquids D. non-metallic E. transparent ans: C

1. All fluids are: A. gases B. liquids C. gases or liquids D. non-metallic E. transparent ans: C Chapter 14: FLUIDS 1 All fluids are: A gases B liquids C gases or liquids D non-metallic E transparent 2 Gases may be distinguished from other forms of matter by their: A lack of color B small atomic weights

More information

Buoyancy and Density. Buoyant Force and Fluid Pressure. Key Concept Buoyant force and density affect whether an object will float or sink in a fluid.

Buoyancy and Density. Buoyant Force and Fluid Pressure. Key Concept Buoyant force and density affect whether an object will float or sink in a fluid. 2 Buoyancy and Density Key Concept Buoyant force and density affect whether an object will float or sink in a fluid. What You Will Learn All fluids exert an upward buoyant force on objects in the fluid.

More information

Matter is made up of particles which are in continual random motion Misconception: Only when a substance is in its liquid or gas state do its

Matter is made up of particles which are in continual random motion Misconception: Only when a substance is in its liquid or gas state do its Kinetic Theory of Matter Matter is made up of particles which are in continual random motion Misconception: Only when a substance is in its liquid or gas state do its particles move because in these two

More information

PHYS:1200 LECTURE 13 FLUIDS (2)

PHYS:1200 LECTURE 13 FLUIDS (2) 1 PHYS:1200 LECTURE 13 FLUIDS (2) Lecture 13 deals with the properties of fluids at rest or fluid statics. We will be discussing mostly liquids and will introduce two important principles of fluid statics:

More information

2015 EdExcel A Level Physics Topic 4. Density and upthrust

2015 EdExcel A Level Physics Topic 4. Density and upthrust 2015 EdExcel A Level Physics Topic 4 Density and upthrust What is Density? Density is Mass per unit volume How closely packed the matter ( stuff ) is within an object Density = Mass Volume ρ = m V More

More information

Fluids: Floating & Flying. Student Leaning Objectives 2/16/2016. Distinguish between force and pressure. Recall factors that allow floating

Fluids: Floating & Flying. Student Leaning Objectives 2/16/2016. Distinguish between force and pressure. Recall factors that allow floating Fluids: Floating & Flying (Chapter 3) Student Leaning Objectives Distinguish between force and pressure Recall factors that allow floating Differentiate between cohesion and adhesion Analyze Pascal s principle

More information

Unit 7. Pressure in fluids

Unit 7. Pressure in fluids -- Unit 7. Pressure in fluids Index 1.- Pressure...2 2.- Fluids...2 3.- Pressure in fluids...3 4.- Pascal's principle...5 5.- Archimedes principle...6 6.- Atmospheric pressure...7 6.1.- Torricelli and

More information

Dec 6 3:08 PM. Density. Over the last two periods we discussed/observed the concept of density. What have we learned?

Dec 6 3:08 PM. Density. Over the last two periods we discussed/observed the concept of density. What have we learned? Over the last two periods we discussed/observed the concept of density. What have we learned? is a ratio of mass to volume describes how much matter is packed into a space is a property of both solids

More information

LAB 7. ROTATION. 7.1 Problem. 7.2 Equipment. 7.3 Activities

LAB 7. ROTATION. 7.1 Problem. 7.2 Equipment. 7.3 Activities LAB 7. ROTATION 7.1 Problem How are quantities of rotational motion defined? What sort of influence changes an object s rotation? How do the quantities of rotational motion operate? 7.2 Equipment plumb

More information

Chapter 15 Fluid. Density

Chapter 15 Fluid. Density Density Chapter 15 Fluid Pressure Static Equilibrium in Fluids: Pressure and Depth Archimedes Principle and Buoyancy Applications of Archimedes Principle By Dr. Weining man 1 Units of Chapter 15 Fluid

More information

Chapter 3: Fluid Statics. 3-1 Pressure 3-2 Fluid Statics 3-3 Buoyancy and Stability 3-4 Rigid-Body Motion

Chapter 3: Fluid Statics. 3-1 Pressure 3-2 Fluid Statics 3-3 Buoyancy and Stability 3-4 Rigid-Body Motion 3-1 Pressure 3-2 Fluid Statics 3-3 Buoyancy and Stability 3-4 Rigid-Body Motion Chapter 3 Fluid Statics 3-1 Pressure (1) Pressure is defined as a normal force exerted by a fluid per unit area. Units of

More information

1/4/18. Density. Density. Density

1/4/18. Density. Density. Density Density Density Important property of materials (solids, liquids, gases) Measure of compactness of how much mass an object occupies "lightness" or "heaviness" of materials of the same size Density Equation:

More information

Fluid Mechanics. Chapter 14. PowerPoint Lectures for University Physics, Twelfth Edition Hugh D. Young and Roger A. Freedman. Lectures by James Pazun

Fluid Mechanics. Chapter 14. PowerPoint Lectures for University Physics, Twelfth Edition Hugh D. Young and Roger A. Freedman. Lectures by James Pazun Chapter 14 Fluid Mechanics PowerPoint Lectures for University Physics, Twelfth Edition Hugh D. Young and Roger A. Freedman Lectures by James Pazun Goals for Chapter 14 To study density and pressure To

More information

Simple Machines. Chana Goodman, Doral Academy Preparatory School, based on a PowerPoint by M. Hunter

Simple Machines. Chana Goodman, Doral Academy Preparatory School, based on a PowerPoint by M. Hunter Simple Machines Chana Goodman, Doral Academy Preparatory School, 2011-2012 based on a PowerPoint by M. Hunter Essential Question How can mechanical advantage be calculated, and used to predict effort and

More information

PHYSICS - CLUTCH CH 17: FLUID MECHANICS.

PHYSICS - CLUTCH CH 17: FLUID MECHANICS. !! www.clutchprep.com INTRO TO DENSITY LIQUIDS and GASES are types of. So we use the term to refer generally to both Liquids AND Gases. The DENSITY of a material is a measure of how tight the molecules

More information

Unit Test Review. Pressure Valve Pump Surfactant Viscosity Plimsoll line Density Units for density Neutral buoyancy Pipeline pig

Unit Test Review. Pressure Valve Pump Surfactant Viscosity Plimsoll line Density Units for density Neutral buoyancy Pipeline pig Pressure Valve Pump Surfactant Viscosity Plimsoll line Density Units for density Neutral buoyancy Pipeline pig Unit Test Review 4. What properties affect or change the density of a substance? 5. Describe

More information

Phys101 Lectures Fluids I. Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle. Ref: 10-1,2,3,4,5,6,7.

Phys101 Lectures Fluids I. Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle. Ref: 10-1,2,3,4,5,6,7. Phys101 Lectures 24-25 luids I Key points: Pressure and Pascal s Principle Buoyancy and Archimedes Principle Ref: 10-1,2,3,4,5,6,7. Page 1 10-1 Phases of Matter The three common phases of matter are solid,

More information

Chapter Five: Density and Buoyancy

Chapter Five: Density and Buoyancy Chapter Five: Density and Buoyancy 5.1 Density 5.2 Buoyancy 5.3 Heat Affects Density and Buoyancy 5.1 Mass and Weight Mass is the amount of matter in an object. Weight is a measure of the pulling force

More information

All Work and no Play. Is that work? Work, work, work. You might head off to your job one day, sit at a computer, and type away at the keys.

All Work and no Play. Is that work? Work, work, work. You might head off to your job one day, sit at a computer, and type away at the keys. All Work and no Play Work, work, work. You might head off to your job one day, sit at a computer, and type away at the keys. Is that work? To a physicist, only parts of it are. Work is done when a force

More information

Density, Pressure Learning Outcomes

Density, Pressure Learning Outcomes Density, Pressure Learning Outcomes Define density and pressure, and give their units. Solve problems about density and pressure. Discuss pressure in liquids and gases. State Boyle s Law. Demonstrate atmospheric

More information

Chapter 9 Solids and Fluids

Chapter 9 Solids and Fluids 2/17/16 Chapter 9 Solids and Fluids Units of Chapter 9 Solids and Elastic Moduli Fluids: Pressure and Pascal s Buoyancy and Archimedes Fluid Dynamics and Bernoulli s Surface Tension, Viscosity, and Poiseuille

More information

Simple Machines Problem Set. 2. What does it mean to say that a machine has a certain mechanical advantage?

Simple Machines Problem Set. 2. What does it mean to say that a machine has a certain mechanical advantage? Simple Machines Problem Set 1. In what two ways can a machine alter an input force? 2. What does it mean to say that a machine has a certain mechanical advantage? 3. Distinguish between ideal mechanical

More information

February 08, Pressure 38 PRESSURE. How did we show air has mass and takes up space? 1

February 08, Pressure 38 PRESSURE. How did we show air has mass and takes up space?   1 38 PRESSURE How did we show air has mass and takes up space? www.mrcjsc.com 1 38 PRESSURE Which would hurt more if it stood on you? Why do you think this is? www.mrcjsc.com 2 38 Pressure Snow shoes will

More information

Concept of Fluid. Density. Pressure: Pressure in a Fluid. Pascal s principle. Buoyancy. Archimede s Principle. Forces on submerged surfaces

Concept of Fluid. Density. Pressure: Pressure in a Fluid. Pascal s principle. Buoyancy. Archimede s Principle. Forces on submerged surfaces FLUID MECHANICS The fluid essential to all life has a beauty of its own. It also helps support the weight of this swimmer. (credit: Terren, Wikimedia Commons) Concept of Fluid Density Pressure: Pressure

More information

mass of container full of air = g mass of container with extra air = g volume of air released = cm 3

mass of container full of air = g mass of container with extra air = g volume of air released = cm 3 1992 Q32 The air pressure inside the passenger cabin of an airliner is 9 x 10 4 Pa when the airliner is at its cruising height. The pressure of the outside atmosphere at this height is 4 x 10 4 Pa. Calculate

More information

HW #10 posted, due Thursday, Dec 2, 11:59 p.m. (last HW that contributes to the final grade)

HW #10 posted, due Thursday, Dec 2, 11:59 p.m. (last HW that contributes to the final grade) HW #10 posted, due Thursday, Dec 2, 11:59 p.m. (last HW that contributes to the final grade) Last Lecture Class: States/Phases of Matter, Deformation of Solids, Density, Pressure Today: Pressure vs. Depth,

More information

Lecture Outline Chapter 15. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.

Lecture Outline Chapter 15. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc. Lecture Outline Chapter 15 Physics, 4 th Edition James S. Walker Chapter 15 Fluids Density Units of Chapter 15 Pressure Static Equilibrium in Fluids: Pressure and Depth Archimedes Principle and Buoyancy

More information

Nadia Naghi. Hung Do. Minh Lu. George Manoli PHYS Lab 12: Archimede s Principle. July 2, 2014

Nadia Naghi. Hung Do. Minh Lu. George Manoli PHYS Lab 12: Archimede s Principle. July 2, 2014 1 Nadia Naghi Hung Do Minh Lu George Manoli PHYS 2125 Lab 12: Archimede s Principle July 2, 2014 2 ABSTRACT: This experiment studies the principle of density by applying Archimedes principle and calculating

More information

Work and Machines. Work occurs when a force causes an object to move in the direction of the force.

Work and Machines. Work occurs when a force causes an object to move in the direction of the force. Work and Machines Work occurs when a force causes an object to move in the direction of the force. You just finished reading and summarizing an entire chapter in your science textbook. In the scientific

More information

Pressure is defined as force per unit area. Any fluid can exert a force

Pressure is defined as force per unit area. Any fluid can exert a force Physics Notes Chapter 9 Fluid Mechanics Fluids Fluids are materials that flow, which include both liquids and gases. Liquids have a definite volume but gases do not. In our analysis of fluids it is necessary

More information

Chapter 13 Fluids. Copyright 2009 Pearson Education, Inc.

Chapter 13 Fluids. Copyright 2009 Pearson Education, Inc. Chapter 13 Fluids Phases of Matter Density and Specific Gravity Pressure in Fluids Atmospheric Pressure and Gauge Pressure Pascal s Principle Units of Chapter 13 Measurement of Pressure; Gauges and the

More information

Chapter 15 Fluids. Copyright 2010 Pearson Education, Inc.

Chapter 15 Fluids. Copyright 2010 Pearson Education, Inc. Chapter 15 Fluids Density Units of Chapter 15 Pressure Static Equilibrium in Fluids: Pressure and Depth Archimedes Principle and Buoyancy Applications of Archimedes Principle Fluid Flow and Continuity

More information

Second Midterm Exam. Physics General Physics Lecture 20 - Fluids 11/9/2016. Fall 2016 Semester Prof. Matthew Jones

Second Midterm Exam. Physics General Physics Lecture 20 - Fluids 11/9/2016. Fall 2016 Semester Prof. Matthew Jones Physics 22000 General Physics Lecture 20 - Fluids Fall 2016 Semester Prof. Matthew Jones 1 Second Midterm Exam Wednesday, November 16 th, 8:00-9:30 pm Location: Elliot Hall of Music -ELLT 116. Covering

More information

Example A: A 400-N force is applied to a tabletop over a square area with side-length L = 20-cm.

Example A: A 400-N force is applied to a tabletop over a square area with side-length L = 20-cm. Physics 17 Part H Fluids and Pressure Uni-Directional Pressure The pressure that is applied over an area is the force applied, divided by the area. A 400-N force is applied to a tabletop over a square

More information

Slide 1 / What is the density of an aluminum block with a mass of 4050 kg and volume of 1.5 m 3?

Slide 1 / What is the density of an aluminum block with a mass of 4050 kg and volume of 1.5 m 3? Slide 1 / 68 1 What is the density of an aluminum block with a mass of 4050 kg and volume of 1.5 m 3? Slide 2 / 68 2 What is the mass of a rectangular shaped ice block with dimensions of 0.04m x 0.05m

More information

Density, Pressure Learning Outcomes

Density, Pressure Learning Outcomes 1 Density, Pressure Learning Outcomes Define density and pressure, and give their units. Solve problems about density and pressure. Discuss pressure in liquids and gases. State Boyle s Law. Demonstrate

More information

CHAPTER 9 Fluids. Units

CHAPTER 9 Fluids. Units CHAPTER 9 Fluids Units Fluids in Motion; Flow Rate and the Equation of Continuity Bernoulli s Equation Applications of Bernoulli s Principle Viscosity Flow in Tubes: Poiseuille s Equation, Blood Flow Surface

More information

1 Fluids and Pressure

1 Fluids and Pressure CHAPTER 3 1 Fluids and Pressure SECTION Forces in Fluids BEFORE YOU READ After you read this section, you should be able to answer these questions: What are fluids? What is atmospheric pressure? What is

More information

Lecture 29 (Walker: ) Fluids II April 13, 2009

Lecture 29 (Walker: ) Fluids II April 13, 2009 Physics 111 Lecture 29 (Walker: 15.3-4) Fluids II April 13, 2009 Lecture 29 1/32 Pressure in Fluids Pressure is the same in every direction in a fluid at a given depth; if it were not, the fluid would

More information

3. Moments and Pressure

3. Moments and Pressure Leaving Cert Physics Long Questions 2017-2002 3. Moments and Pressure Remember to photocopy 4 pages onto 1 sheet by going A3 A4 and using back to back on the photocopier Contents Moments: ordinary level

More information

10.4 Buoyancy is a force

10.4 Buoyancy is a force Chapter 10.4 Learning Goals Define buoyancy. Explain the relationship between density and buoyancy. Discuss applications of Archimedes principle. 10.4 Buoyancy is a force Buoyancy is a measure of the upward

More information

Applications of Bernoulli s principle. Principle states that areas with faster moving fluids will experience less pressure

Applications of Bernoulli s principle. Principle states that areas with faster moving fluids will experience less pressure Applications of Bernoulli s principle Principle states that areas with faster moving fluids will experience less pressure Artery o When blood flows through narrower regions of arteries, the speed increases

More information

PHY131H1S - Class 23. Today: Fluids Pressure Pascal s Law Gauge Pressure Buoyancy, Archimedes Principle. A little pre-class reading quiz

PHY131H1S - Class 23. Today: Fluids Pressure Pascal s Law Gauge Pressure Buoyancy, Archimedes Principle. A little pre-class reading quiz PHY131H1S - Class 23 Today: Fluids Pressure Pascal s Law Gauge Pressure Buoyancy, Archimedes Principle Archimedes (287-212 BC) was asked to check the amount of silver alloy in the king s crown. The answer

More information

Chapter 14 Fluids Mass Density Pressure Pressure in a Static Fluid Pascal's Principle Archimedes' Principle

Chapter 14 Fluids Mass Density Pressure Pressure in a Static Fluid Pascal's Principle Archimedes' Principle Chapter 14 Fluids Mass Density Pressure Pressure in a Static Fluid Pascal's Principle Archimedes' Principle Fluids in Motion The Equation of Continuity DEFINITION OF MASS DENSITY The mass density ρ is

More information

Student Exploration: Archimedes Principle

Student Exploration: Archimedes Principle Name: Date: Student Exploration: Archimedes Principle Vocabulary: Archimedes principle, buoyant force, density, displace, mass, volume, weight Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

More information

. In an elevator accelerating upward (A) both the elevator accelerating upward (B) the first is equations are valid

. In an elevator accelerating upward (A) both the elevator accelerating upward (B) the first is equations are valid IIT JEE Achiever 2014 Ist Year Physics-2: Worksheet-1 Date: 2014-06-26 Hydrostatics 1. A liquid can easily change its shape but a solid cannot because (A) the density of a liquid is smaller than that of

More information

More About Solids, Liquids and Gases ASSIGNMENT

More About Solids, Liquids and Gases ASSIGNMENT More About Solids, Liquids and Gases ASSIGNMENT 1. Fill in the blank spaces by choosing the correct words from the list given below: List : water, density, altitudes, lateral, intermolecular, force, cohesion,

More information

ACTIVITY 1: Buoyancy Problems. OBJECTIVE: Practice and Reinforce concepts related to Fluid Pressure, primarily Buoyancy

ACTIVITY 1: Buoyancy Problems. OBJECTIVE: Practice and Reinforce concepts related to Fluid Pressure, primarily Buoyancy LESSON PLAN: SNAP, CRACKLE, POP: Submarine Buoyancy, Compression, and Rotational Equilibrium DEVELOPED BY: Bill Sanford, Nansemond Suffolk Academy 2012 NAVAL HISTORICAL FOUNDATION TEACHER FELLOWSHIP ACTIVITY

More information

TEKS Lesson 6.8E: Machines

TEKS Lesson 6.8E: Machines 6.8E Investigate how inclined planes and pulleys can be used to change the amount of force to move an object. : Machines What is a machine? A machine is a device that allows you to do work in a way that

More information

3. A fluid is forced through a pipe of changing cross section as shown. In which section would the pressure of the fluid be a minimum?

3. A fluid is forced through a pipe of changing cross section as shown. In which section would the pressure of the fluid be a minimum? AP Physics Multiple Choice Practice Fluid Mechanics 1. A cork has weight mg and density 5% of water s density. A string is tied around the cork and attached to the bottom of a water-filled container. The

More information

North Carolina State University PY131 Lab Manual

North Carolina State University PY131 Lab Manual INTRODUCTION In the 3 rd century BC, Archimedes was asked by a king to figure out the purity of the gold in the king s crown. While Archimedes knew he could find the weight of the crown using a balance,

More information

Conceptual Physics Fundamentals

Conceptual Physics Fundamentals Conceptual Physics Fundamentals Chapter 7: FLUID MECHANICS This lecture will help you understand: Density Pressure Pressure in a Liquid Buoyancy in a Liquid Pressure in a Gas Atmospheric Pressure Pascal

More information

UNIT D: MECHANICAL SYSTEMS

UNIT D: MECHANICAL SYSTEMS UNIT D: MECHANICAL SYSTEMS SCIENCE 8 SCIENCE 8 UNIT D SECTION 1.0 1 MACHINES ARE TOOLS THAT HELP HUMANS DO WORK. SECTION 1.0 SCIENCE 8 UNIT D SECTION 1.0 2 1 SIMPLE MACHINES MEETING HUMAN NEEDS TOPIC 1.1

More information

Investigating Sinking and Floating

Investigating Sinking and Floating Chapter 13 Forces in Fluids Investigation 13A Investigating Sinking and Floating Background Information When an object is placed in a fluid, the force of gravity causes part or all of the object to sink

More information

28 multiple choice, 4 wrong answers will be dropped Covers everything learned in Phys 105 and 106

28 multiple choice, 4 wrong answers will be dropped Covers everything learned in Phys 105 and 106 Final exam 2:30-5:00 pm, Tuesday 5/10/2011 FMH 310 28 multiple choice, 4 wrong answers will be dropped Covers everything learned in Phys 105 and 106 About 7 problems from Phys 105 About 8-9 problems are

More information