Why do things float? Climate and Global Change. Introduction
|
|
- Opal Eaton
- 5 years ago
- Views:
Transcription
1 Why do things float? Introduction Archimedes of Syracuse (ca B.C.), a physical scientist, is credited with understanding two basic principles: When describing the mechanical advantage gained by the use of a lever, Archimedes is claimed to have boasted: Give me somewhere to stand, and I will move the Earth. When having discovered, supposedly while in the midst of his bath, a method for determining whether the King s crown had been made of pure gold or a cheaper alloy, Archimedes is said to have run naked through the streets shouting: Eureka! The second of these two events led to Archimedes Principle which notes that a body immersed in a fluid is buoyed upward by a force equal in magnitude to the weight of the fluid displaced by the body. The upward force or buoyant force is a consequence of increasing pressure with increasing depth within a fluid in a gravitational field. One way to find a leak in a rubber inner tube is to immerse it in water. If you have ever tried this, you know that it is not easy to hold the whole tube under water. The buoyant force that the water exerts on the tube difficult to fight against. A hot air balloon is another example of Archimedes Principle. Theory To apply Archimedes Principle, we must determine the weight of the displaced fluid. To accomplish this, we need to know the density of the fluid and the volume displaced, which equals the volume of the submerged object. Recall we have defined density as the mass per unit volume of a substance. Density is what ultimately determines the buoyant force that a fluid exerts on an object. Remember the units of density are grams per cubic centimeter, or kilograms per cubic meter. The volume of an object depends on the object and how much of it is submerged.
2 Finding the volume of an object can be tricky, especially if it is not a nice even shape, like a sphere. One way to find an object s volume is to completely submerge it in water. The rise in the volume of water equals the volume of the object submerged. The beauty of this principle is that it does not depend on the shape of the object. Buoyant Force Measurement Suspend a film canister that contains several fishing weights from a spring balance scale as shown on the right side of the figure to the right. Record the weight. Weight suspended in air = Next place the suspended canister in a container with water as shown on the left side of the figure. Again record the weight. Weight suspended in water = Record the difference. Difference in the two measured weights = This difference in the two measured weights is the buoyancy force being applied to the canister by the water. Have you noticed that you can lift a person standing in a swimming pool much easier than when they are standing outside the pool? In fact have you noticed that as you lift them out of the water they seem to get heavier? This is because as you lift them out of the water they have less buoyancy force aiding you. In reality the air is also applying a buoyancy force to the canister. According to Archimedes Principle the buoyancy force is equal to the weight of the fluid being displaced by the object. For air, the weight of the displaced air is small. Continued Buoyant Force Measurements Fill a container to the brim with water. Be sure that the container is completely full. Carefully place the full container inside a larger container. Next, place several fishing weights in a film canister and slowly submerge it in a full container of water. Do not drop the canister into the water and splash water over the edge of the container. Be sure that all of the water that overflows
3 is collected in the Measure the volume of the water that overflowed using a graduated cylinder and record the value below. Volume of a canister = You now know the volume of the film canister. After drying the external container, repeat the experiment with 1/2-oz fishing weight in a canister. Again be careful not to splash water over the brim when placing the canister into the water. Capture and measure the water overflow as before. Also estimate the fractional amount of the canister is underwater. You may need to use the restaurant server s trick to aid in pouring water from a pitcher and coat the edge of the internal container with a light coat of butter to release the water s surface tension so the water will spill over the edge and not bulge above the containers edge. Volume of a water for a 1/2-oz weight = Next, repeat the measurements with a 3/4-oz weight in the canister. Again be sure to dry the Volume of a water for a 3/4-oz weight = Next, repeat the measurements with two 1/2-oz weights in the canister. Again be sure to dry the Volume of a water for the two 1/2-oz weights (Total 1 oz) = Next, repeat the measurements with 0.75-oz and 0.5-oz weights in the canister. Again be sure to dry the Volume of a water for the 0.75-oz and 0.5-oz weights (Total 1.25 oz) = Next, repeat the measurements with two 0.75-oz weights in the canister. Again be sure to dry the Volume of a water for two 0.75-oz weights (Total 1.5 oz) = Next, repeat the measurements with two 0.75-oz and 0.25 oz weights in the canister. Again be sure to dry the Volume of a water for two 0.75-oz and 0.25 oz weights (Total 1.75 oz) =
4 Repeat with a 2-oz weight. Again be sure to dry the Volume of a water for a 2-oz weight = What happens to the displaced volume of water as the weights change from 1/2 to 2 oz? What happens to the fractional amount of the canister that is underwater as the weights increase for 1/2 oz to 2 oz?? Calculate and record the density of the canister for each of the three experiments. The density of the canister can be calculated by dividing the canister s mass by its volume. The mass of the canister in each case can be determined by converting the canister s weight to its mass; on the Earth s surface, 1-lb weight is equivalent to 454-gm mass and 1 lb equals 16 oz. Note, we do not know the weight of the canister, we only know the weight of the fishing weights contained within the canister. For now, we will neglect the weight of the canister. Density of the canister with the 1/2-oz weight = gm per cubic centimeter Density of the canister with the 1-oz weight = gm per cubic centimeter Density of the canister with the 1.25-oz weight = gm per cubic centimeter Density of the canister with the 1.5-oz weight = gm per cubic centimeter Density of the canister with the 1.75-oz weight = gm per cubic centimeter Density of the canister with the 2-oz weight = gm per cubic centimeter Compare the density of the canisters with the density of water. Water s density is 1 gm per cubic centimeter. Predict the weight needed to exactly match the buoyant force of the completely submerged canister.
5 Climate and Global Change Recalling that ice cubes float, what does this imply about the density of ice as compared to water? What does this picture imply about the density of Coke Classic as compared to Diet Coke? /graphics2/2b40_u2.jpg Archimedes Principle applies to any fluid in hydrostatic equilibrium. Thus, it is equally valid for gases as for liquids. Therefore in the atmosphere, a parcel of air with density less than its surrounding environmental air will accelerate upward; an air parcel more dense than its surrounding air will accelerate downward. Combining the Ideal Gas Law which indicates that warm air is less dense than cold air if both are at equal pressure and Archimedes Principle, air warmer than its surrounding air rises while air colder than its surrounding air sinks. This is the basic driving force behind convection.
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 informationPHY131H1S - 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 informationFloat 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 informationAdditional 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 informationPHYS: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 informationIn 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 informationFrom and
From http://www.school-for-champions.com/science/fluidpressure.htm and http://www.school-forchampions.com/science/fluidfloating.htm by Ron Kurtus, School for Champions Pressure in Fluids by Ron Kurtus
More information10.4 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 informationNotes 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 informationIn 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 informationLecture 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 informationUnit 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 informationDensity 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 informationPhys101 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 informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The concept of pressure involves both 1) A) force and area. B) force and volume. C) area
More informationDensity 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 informationThe 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 information17.2 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 informationActivity 4 Buoyancy in a Liquid /Archimedes' Principle F1003 Physics II ITESM Campus Aguascalientes January-May 2017 Dr. Juan-Manuel CAMPOS-SANDOVAL
Activity 4 Buoyancy in a Liquid /Archimedes' Principle F1003 Physics II ITESM Campus Aguascalientes January-May 2017 Dr. Juan-Manuel CAMPOS-SANDOVAL Name MULTIPLE CHOICE. Choose the one alternative that
More informationHW #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 informationPage 1
Contents: 1. Thrust and Pressure 2. Pressure in Fluids 3. Buoyancy 4. Why objects sink or Float when placed on surface of water? 5. Archimedes Principle 6. Relative Density Learning Objectives: The students
More information3. 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 informationPhys101 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 informationL 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 informationChapter 9 Fluids CHAPTER CONTENTS
Flowing fluids, such as the water flowing in the photograph at Coors Falls in Colorado, can make interesting patterns In this chapter, we will investigate the basic physics behind such flow Photo credit:
More informationName 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 informationChapter 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 informationFluids. 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 informationMore 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 informationFLUID STATICS II: BUOYANCY 1
FLUID STATICS II: BUOYANCY 1 Learning Goals After completing this studio, you should be able to Determine the forces acting on an object immersed in a fluid and their origin, based on the physical properties
More informationShark Biology Buoyancy by Bill Andrake
Shark Biology Buoyancy by Bill Andrake Science Lesson: Buoyancy - Based on Webisode 45 - Shark Biology Grade Level: 6-8 Time: Four (45-50 minute) class periods Introduction Jonathan narrates an educational
More informationVacuum 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 informationDensity and Archimedes Principle 11-cor
Density and Archimedes Principle 11-cor Objectives: To understand the concept of density and its relationship to various materials. To understand and use Archimedes Principle. Equipment: Dial calipers,
More informationDENSITY 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 informationBuoyancy and the Density of Liquids (approx. 2 h) (11/24/15)
Buoyancy and the Density of Liquids (approx. 2 h) (11/24/15) Introduction Which weighs more, a pound of lead or a pound of feathers? If your answer to this question is "a pound of lead", then you are confusing
More information2 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 informationPRESSURE 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 informationPHYS 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 informationPHYSICS - 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 informationSimulating Microgravity with Buoyancy A Space School Lesson Plan
ASTRONAUT TRAINING...UNDERWATER Simulating Microgravity with Buoyancy A Space School Lesson Plan by Bill Andrake, Swampscott Middle School Swampscott, Massachusetts Science Lesson: Buoyancy - Based on
More information28 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 informationStudent 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 informationLECTURE 16: Buoyancy. Select LEARNING OBJECTIVES:
Lectures Page 1 Select LEARNING OBJECTIVES: LECTURE 16: Buoyancy Understand that the buoyant force is a result of a pressure gradient within a fluid. Demonstrate the ability to analyze a scenario involving
More informationWhat are some properties of fluids? Why does a lake freeze from the top downward?
Fluid Mechanics > A fluid is any substance that capable of flowing, which includes liquids, gases and powdered solids. Therefore fluids have some similar mechanical properties. ex; Both can not support
More informationScience 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 informationGrade 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 informationChapter 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 informationFluids 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 informationChapter 13 Fluids. Copyright 2009 Pearson Education, Inc.
Chapter 13 Fluids 13-7 Buoyancy and Archimedes Principle This is an object submerged in a fluid. There is a net force on the object because the pressures at the top and bottom of it are different. The
More informationChapter 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 informationEXPERIMENT 8 BUOYANT FORCES
EXPERIMENT 8 BUOYANT FORCES INTRODUCTION: The purpose of this experiment is to determine buoyant forces on submerged solid objects, and to investigate the dependence of buoyant forces on volumes and masses
More informationChapter 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 informationConcepTest PowerPoints
ConcepTest PowerPoints Chapter 10 Physics: Principles with Applications, 6 th edition Giancoli 2005 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for
More informationFluid 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 informationHydrostatics. Physics 1425 Lecture 25. Michael Fowler, UVa
Hydrostatics Physics 1425 Lecture 25 Michael Fowler, UVa Basic Concepts Density Pressure: Pascal s Principle The Crown and the Bathtub Around 250 BC, the king of Syracuse commissioned a new crown,and gave
More informationCreating Science Density.
Creating Science Density. Did you know that water can float on water! Suggested outcomes (NOTE: This is by no means an exhaustive list of possible outcomes, neither is it intended that ONLY these outcomes
More informationStatic Fluids. **All simulations and videos required for this package can be found on my website, here:
DP Physics HL Static Fluids **All simulations and videos required for this package can be found on my website, here: http://ismackinsey.weebly.com/fluids-hl.html Fluids are substances that can flow, so
More informationHydrostatics Physics Lab XI
Hydrostatics Physics Lab XI Objective Students will discover the basic principles of buoyancy in a fluid. Students will also quantitatively demonstrate the variance of pressure with immersion depth in
More informationClicker 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 informationL-14 Fluids [3] Buoyancy why things float. Buoyant Force F B. Archimedes principle. Archimedes Principle
Buoyancy why things float L-14 Fluids [3] Review fluid statics Pascal s Principle hy things float Fluids in Motion Fluid Dynamics Hydrodynamics Aerodynamics TITANIC The trick is to keep the water on the
More informationChapter 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 informationLecture 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. 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 informationBuoyancy 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 informationTake the challenge exam!
Take the challenge exam! Today is the last day to take it! Read the book Focus on new concepts Answer the questions at the end of each chapter Vocabulary test #1 deadline: Friday 25 Sept. First exam deadline:
More informationForce 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 informationChapter 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 informationLecture 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 informationProperties 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 informationFluid 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 informationFluid 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 informationTo connect the words of Archimedes Principle to the actual behavior of submerged objects.
Archimedes Principle PURPOSE To connect the words of Archimedes Principle to the actual behavior of submerged objects. To examine the cause of buoyancy; that is, the variation of pressure with depth in
More informationDec 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 informationFluids Pascal s Principle Measuring Pressure Buoyancy
Fluids Pascal s Principle Measuring Pressure Buoyancy Lana Sheridan De Anza College April 11, 2018 Last time shear modulus introduction to static fluids pressure bulk modulus pressure and depth Overview
More informationFluids, 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 informationConceptual 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 informationCommercial Diving 9 month program at Holland College
Chapter 9: p.332 2 careers possibilities come up in this chapter Commercial Diving 9 month program at Holland College Reading the intro on p 332 will tell you other one Density and Volume story...yes,
More informationReview: 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 informationPressure 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 informationNadia 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 informationThis Week.
This Week http://wimp.com/slinkyanswer/ Liquids and Gases Pressure How do they lift your car for service? Atmospheric pressure We re submerged! How can you drink a Coke? Archimedes! Eureka!!! Balloons
More information1. 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 informationDensity. 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 informationInvestigating 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 informationSecond 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 informationUnit 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 information1/4/18. 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 informationCh. 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 informationBoy, Oh Buoyancy. Does it Float? Does it Sink?
Boy, Oh Buoyancy Does it Float? Does it Sink? What is density? A measure of how much material is packed into a unit volume of the material The fewer particles packed into a given volume, the less dense
More informationAP Lab 11.3 Archimedes Principle
ame School Date AP Lab 11.3 Archimedes Principle Explore the Apparatus We ll use the Buoyancy Apparatus in this lab activity. Before starting this activity check to see if there is an introductory video
More informationExample 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 informationLAB 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 informationL-14 Fluids [3] Fluids in Motion Fluid Dynamics Hydrodynamics Aerodynamics
L-14 Fluids [3] Fluids in Motion Fluid Dynamics Hydrodynamics Aerodynamics Archimedes Principle F B W A buoyant force F B equal to the weight of displaced water is exerted on a submerged object. Will it
More informationUnit 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 informationFLOATING AND SINKING
NAME SCHOOL INDEX NUMBER DATE FLOATING AND SINKING 1. 1994 Q5a P2 (a) State Archimedes s principal (1 mark) 2. 1996 Q29 P1 A solid copper sphere will sink in water while a hollow copper sphere of the same
More informationDensity, 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 informationChapter 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 informationLecture 19 Fluids: density, pressure, Pascal s principle and Buoyancy.
Lecture 19 Water tower Fluids: density, pressure, Pascal s principle and Buoyancy. Hydraulic press Pascal s vases Barometer What is a fluid? Fluids are substances that flow. substances that take the shape
More informationPlease pick up your midterms from front of class
Please pick up your midterms from front of class Average: 26.7/40 ~ 67 % Top grade: 39/40 = 97.5% Test % score distribution: Make sure you go through your test and the solutions carefully to understand
More informationScience 8 B Topic 4-6 Flow Rate and Viscosity fluids resistance to flow viscosity viscous higher viscosity it has liquids and gases
Science 8 B Topic 4-6 Flow Rate and Viscosity - A fluids resistance to flow (its thickness or thinness) is called viscosity - A thicker a liquid is, the more viscous it is and the higher viscosity it has
More information