Biomechanics. Ron Kipp Alpine Sport Education Manager
|
|
|
- Bryce Ford
- 5 years ago
- Views:
Transcription
1 Biomechanics Ron Kipp Alpine Sport Education Manager
2 Turns can be any part of a circle
3 Turns can be any part of a circle
4 Turns can be any part of a circle
5 Turns can be any part of a circle
6 Turns can be any part of a circle
7 Why do we feel the most force in the arc? Fastest Slowest
8 if the radius (r) is a 20 m arc, and it is reduced to a 15 m arc, then Fc is increased 25% F c = V 2 r
9 ...because there is more centripetal force!
10 if the velocity (v) is 10 m/s, and it is increased to a 14 m/s, then Fc is doubled! F c = V 2 r 10 m/s = 22.3 mph 14 m/s = 31.3 mph
11 Do we increase speed? or Minimize loss?
12 Total Energy Loss* (%) air drag force 21.4 ± 2.2 snow reaction force 78.6 ± 2.2 Total Energy Gain* (%) gravitational force 97.9 ± 0.8 snow reaction force 2.1 ± 0.8 *13m course
13 Sir Isaac Newton
14 st law: Lex I: Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum illum mutare. Every body perseveres in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impressed. To turn, the snow has to push back!
15 st Law:
16 a body in motion stays in motion... unless acted upon by an external force.
17 a body in motion stays in motion... unless acted upon by an external force.
18 a body in motion stays in motion... unless acted upon by an external force.
19 The Turn Centripetal Force
20 Centripetal Force
21 Paradox? Centripetal Force Friction
22
23
24
25
26 Total Energy Loss* (%) air drag force 21.4 ± 2.2 snow reaction force 78.6 ± 2.2
27 st law: Lex I: Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum illum mutare. Every body perseveres in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impressed. To turn, the snow has to push back!
28 rd law: Lex III: Actioni contrariam semper et æqualem esse reactionem: sive corporum duorum actiones in se mutuo semper esse æquales et in partes contrarias dirigi. For a force there is always an equal and opposite reaction: or the forces of two bodies on each other are always equal and are directed in opposite directions. To rotate the skis to the left, something has to rotate to the right!
29 hmmm, something left equaling something right?
30
31 the torque on the left = the torque on the right 3 ft * 6 lbs = 6 ft * 3 lbs 18 ft lbs = 18 ft lbs
32 2/3 of total body mass 1/3 3 rd law angular analogue: For every torque exerted by one body on another, there is an equal and opposite torque exerted by the second body on the first.
33 A skier can stabilize from the ground,
34 can stabilize from the upper body
35 Skiers rotate or counter-rotate because they need a turning impetus
36 Skiers rotate because they need a turning impetus or force. Where is there more mass?
37 1/3 2/3 of total body mass
38 We move relative to our own body
39 We ski in 3d space Z [m] Y [m] CAM 2 CAM 1 CAM 4 CAM 3 X [m]
40
41 rd law: Lex III: Actioni contrariam semper et æqualem esse reactionem: sive corporum duorum actiones in se mutuo semper esse æquales et in partes contrarias dirigi. For a force there is always an equal and opposite reaction: or the forces of two bodies on each other are always equal and are directed in opposite directions. To rotate the skis to the left, something has to rotate to the right!
42
43 = Center- of- Pressure
44 Fore 30 Fore/Aft Position [cm] AFT Aft % Turn Cycle
45
46 Smooth fore to aft movement. FAST Hanging out on the tip! SLOW
47 r = 0.98 p = 0.004
48 Center- of- Pressure
49
50
51 Center- of- Pressure
52
53 using the boot TO balance. FOR balance.
54 Fore/Aft Balance
55 Tip Pressure
56 1 st Class Lever Force Axis Resistance
57 the perfect fore/aft position
58
59
60
61
62
63
64
65
66 The boot will not transmit force to the ski until it reaches its end range- of- motion in flexion. balance is reduced. The skier ends up having flexion but nothing has been transmitted to the ski.
67
68 the snow that is ultimately balance.
69 How will the tips get back on the snow?
70
71
72
73
74 The skier needs to keep the anterior muscles innervated. flexed.
75 Important Points: Turns can be any shape Turn shape, size and speed effect C f Rotation left needs to be balanced with rotation to the right. Fore/aft movement need to be smooth to be fast. Tip pressure occurs when the skier can apply their body mass that direction.
Riding From The Snow Up 2/10/02. Riding From the Snow Up. Ron LeMaster 2/10/02. The Text Book. Ron LeMaster 2002 All rights reserved 1
Riding From the Snow Up Ron LeMaster 2/10/02 The Text Book Ron LeMaster 2002 All rights reserved 1 My Approach Look carefully at the best skiers Distill what is common Seek an explanation for why it works
Biomechanics Sample Problems
Biomechanics Sample Problems Forces 1) A 90 kg ice hockey player collides head on with an 80 kg ice hockey player. If the first person exerts a force of 450 N on the second player, how much force does
Fundamental Mechanics of Alpine Skiing Across Adaptive Disciplines. Produced by PSIA-AASI, in cooperation with Disabled Sports USA.
Fundamental Mechanics of Alpine Skiing Across Adaptive Disciplines Produced by PSIA-AASI, in cooperation with Disabled Sports USA. Balance & Stance - Beginner/Novice Zone Control the relationship of the
Chapter. Introduction. Technique The Canadian Approach
Introduction The Canadian technical approach to skiing is a result of the evolution of the sport. Even if equipment has changed since the first skiers hit the slopes, the laws of physics have not. Many
Geezer Senior Focus - What?
Geezer Senior Focus - What? Seniors are a very discerning group of diverse individuals who are quite adept at recognizing balderdash. This means that whoever coaches seniors needs to be very knowledgeable
BIOMECHANICAL MOVEMENT
SECTION PART 5 5 CHAPTER 12 13 CHAPTER 12: Biomechanical movement Practice questions - text book pages 169-172 1) For which of the following is the athlete s centre of mass most likely to lie outside of
Beginner Skier Progression -Class Levels One and Two Never-ever skiers to skiers making advanced wedge turns
Beginner Skier Progression -Class Levels One and Two Never-ever skiers to skiers making advanced wedge turns This is an in depth progression which would be more suitable for students who are not particularly
Kinematics errors leading to Ski Injuries (2015) Haleh Dadgostar MD Sports Medicine Specialist Iran University of Medical Sciences
Kinematics errors leading to Ski Injuries (2015) Haleh Dadgostar MD Sports Medicine Specialist Iran University of Medical Sciences Alpine Ski Practice of skiing : 5000 years ago when early hunters and
Guided Uphill Arc Blue Groomed. Carved Uphill Arc Blue Groomed. Skate on Flat Terrain Green Groomed. Vertical Side Slip Blue Groomed
The 3 task matrices describe skiing with specific application of different skill blends. Mastery of the tasks in the 3 matrices can help create versatile skiing. All tasks require skilled simultaneous
Mechanical Energy I. Name: Date: Section C D F. Mr. Alex Rawson Physics
Name: Date: Section C D F Mechanical Energy I Mr. Alex Rawson Physics 1. One of the two Olympic weightlifting events is called the Clean and Jerk, shown below. As of Athens 2004, the record for Clean and
- a set of known masses, - four weight hangers, - tape - a fulcrum upon which the meter stick can be mounted and pivoted - string - stopwatch
1. In the laboratory, you are asked to determine the mass of a meter stick without using a scale of any kind. In addition to the meter stick, you may use any or all of the following equipment: - a set
-Elastic strain energy (duty factor decreases at higher speeds). Higher forces act on feet. More tendon stretch. More energy stored in tendon.
As velocity increases ( ) (i.e. increasing Froude number v 2 / gl) the component of the energy cost of transport associated with: -Internal kinetic energy (limbs accelerated to higher angular velocity).
Friction occurs when surfaces slide against each other.
Chapter 12, Section 2 Key Concept: Friction is a force that opposes motion. BEFORE, you learned Gravity is the attractive force masses exert on each other Gravity increases with greater mass and decreases
2 Available: 1390/08/02 Date of returning: 1390/08/17 1. A suction cup is used to support a plate of weight as shown in below Figure. For the conditio
1. A suction cup is used to support a plate of weight as shown in below Figure. For the conditions shown, determine. 2. A tanker truck carries water, and the cross section of the truck s tank is shown
EOY Force and Motion REVIEW
Name: ate: 1. The diagram shows two bowling balls of equal mass. all is resting near the edge of a shelf. all is resting on the ground below. 2. Two workers use a ramp to help lift a box onto a dock as
Secondary Physics: The Compass Rose, Cars and Tracks
Secondary Physics: The Compass Rose, Cars and Tracks Secondary Physics at the NASCAR Hall of Fame The Great Hall and Glory Road Focus object or destination in the Hall: Compass Rose, 18 compass lines,
7.3.2 Distance Time Graphs
7.3.2 Distance Time Graphs 35 minutes 39 marks Page 1 of 11 Q1. A cyclist goes on a long ride. The graph shows how the distance travelled changes with time during the ride. (i) Between which two points
Skier Evaluation Form
Skier Evaluation Form Instructor Alignment Stance Discipline Reference Alignments Terrain Green Blue Black Off-Piste : Side Slip w/ Stop Wedge Change-Ups Hockey Stop Hops in a Straight Run Side Slips with
GLOSSARY abdominal muscles alley oop anatomical reference planes abduct abductors anatomy absorption angulation adduct adductors anterior
GLOSSARY 0 abdominal muscles The muscles covering that part of the body between the chest and the pelvis and enclosing the stomach, intestines, liver, spleen and pancreas abduct To pull away from the midline
PYP 001 First Major Exam Code: Term: 161 Thursday, October 27, 2016 Page: 1
Term: 161 Thursday, October 27, 2016 Page: 1 *Read the following (20) questions and choose the best answer: 1 The motion of a swimmer during 30.0 minutes workout is represented by the graph below. What
Trends in Modern Alpine Ski Racing
Trends in Modern Alpine Ski Racing Ron LeMaster Theme Alpine racing technique and tactics are evolving quickly The evolution is driven by the evolution in equipment Ron LeMaster 2000 All rights reserved
Alignment & Stance in High Performance Skiing
Alignment & Stance in High Performance Skiing Ron LeMaster Ron LeMaster What I ve Learned in 10 Years A lot! Good alignment is not well defined Alignment and stance are the subjects of many technical misconceptions
REFINE DEVELOP INTRODUCE
ESSEX Ski Racing Training Criteria This document aims to set out the criteria that athletes are encouraged to achieve in order to progress through each of the training groups that make up the training
Types of Forces. Pressure Buoyant Force Friction Normal Force
Types of Forces Pressure Buoyant Force Friction Normal Force Pressure Ratio of Force Per Unit Area p = F A P = N/m 2 = 1 pascal (very small) P= lbs/in 2 = psi = pounds per square inch Example: Snow Shoes
Racer Skills Evaluation
By Tim LaVallee Coaches periodically evaluate their athletes for different areas of their sport. Typically coaches administer physical fitness tests to evaluate or monitor their athlete s fitness levels
Exam Unit 5: Motion and Forces
Exam Unit 5: Motion and Forces 1. Aleshia is moving forward at constant speed of 2 m/s. Which statement correctly describes Aleshia s movement? A. Her speed is increasing by 2 m/s every second. B. She
Motion is a function of both direction and speed. The direction may
BIOMECHANICS Ahmed.J. Kawoosh Osmania university P.M.Ed 7207832127 T24 890716856 Airtel 07802309769 Zain abc_d871@yahoo.com A body is said to be in motion when it changes its position or location in respect
3. Approximately how far will an object near Earth's surface fall in 3.0 seconds? m m m m
Page 1 of 5 Sub work 10-10-02 Name 12-OCT-03 1. A car travels a distance of 98 meters in 10. seconds. What is the average speed of the car during this 10.-second interval? 1. 4.9 m/s 3. 49 m/s/ 2. 9.8
SPORTS BIOMECHANICS FOR CRICKET COACHES
SPORTS BIOMECHANICS FOR CRICKET COACHES Level 4: Sports Biomechanics English & Wales Cricket Board February 2013 Dr Paul Hurrion: ECB Level 4 - Sports Biomechanics OVERVIEW * SPORTS SCIE CE * SPORTS MEDICI
Tail Roping 101. Teaching the finer aspects of rope handling. Jeff Cripps Central Division November 30, 2012
Tail Roping 101 Teaching the finer aspects of rope handling Jeff Cripps Central Division November 30, 2012 Course Objective: Tail Roping 101 Develop better understanding of the skiing skills necessary
PHYSICS REVIEW SHEET 2010 MID-TERM EXAM
PHYSICS REVIEW SHEET 2010 MID-TERM EXAM Concepts And Definitions Definitions of fact, hypothesis, law, theory Explain the scientific method Difference between average and instantaneous speed and speed
Motion and Speed Classwork Classwork #1
Motion and Speed Classwork Classwork #1 8 th Grade PSI 1. Define motion. 2. When you look at the ground, you seem to be at rest. Why is this? Why does someone in space see you moving in a circle? 3. Define
TWO DIMENSIONAL KINEMATICS
PHYSICS HOMEWORK #11 TWO DIMENSIONAL [Remember that ALL vectors must be described by BOTH magnitude and direction!] 1. You walk 250. steps North and then 400. steps East. What is your displacement? (Distance
Question: Bicycles. Observations About Bicycles. Static Stability, Part 1. Static Stability, Part 2. Static Stability, Part 3
Bicycles 1 Bicycles 2 Question: Bicycles How would raising the height of a sport utility vehicle affect its turning stability? 1. Make it less likely to tip over. 2. Make it more likely to tip over. 3.
Appendix : Categorization Task. Instructions
Appendix : Categorization Task Instructions Your task is to group the 25 problems below based upon similarity of solution into various groups on the sheet of paper provided. Problems that you consider
15/02/2013. Sports Biomechanics for Cricket Coaches. Context Overall Aim OVERVIEW. AIMS / Learning Outcomes
Sports Biomechanics for Cricket Coaches Level 4: Sports Biomechanics English & Wales Cricket Board Context Overall Aim The course structure and content will reflect the applied application of Sport Biomechanics,
Student Exploration: Uniform Circular Motion
Name: Date: Student Exploration: Uniform Circular Motion Vocabulary: acceleration, centripetal acceleration, centripetal force, Newton s first law, Newton s second law, uniform circular motion, vector,
WebAssign Ch. 8 Regular Physics (Homework)
WebAssign Ch. 8 Regular Physics (Homework) Current Score : 23.85 / 40 ue : Monday, October 3 2011 11:00 PM MT THOMAS FOWLR Physics, section T1_P5_Carlson, Instructor: Sarah Carlson 1. /1.9 points GPhys09
(2) BIOMECHANICS of TERRESTRIAL LOCOMOTION
(2) BIOMECHANICS of TERRESTRIAL LOCOMOTION Questions: - How does size influence the mode and speed of locomotion? - What determines the energy cost of locomotion? - Why do humans walk and run the way we
Robot Arm Challenge Answer Key
Youth Explore Trades Skills Fluid Power Worksheet These are some of the words and ideas that engineers use when working with fluid power. They are also used by mechanics and equipment operators when controlling
DATA EQUATIONS MATH ANSWER
HCP PHYSICS REVIEW SHEET MID TERM EXAM Concepts And Definitions 1. Definitions of fact, hypothesis, law, theory 2. Explain the scientific method 3. Difference between average and instantaneous speed and
Chapter 6: Air Pressure Measuring air pressure Variations due to temperature and water vapor Development of pressure systems Generation of winds
Chapter 6: Air Pressure Measuring air pressure Variations due to temperature and water vapor Development of pressure systems Generation of winds Understanding Air Pressure: -pressure exerted by the weight
Chapter 6: Air Pressure Measuring air pressure Variations due to temperature and water vapor Development of pressure systems Generation of winds
Chapter 6: Air Pressure Measuring air pressure Variations due to temperature and water vapor Development of pressure systems Generation of winds Understanding Air Pressure: -pressure exerted by the weight
EF 151 Exam #2 - Spring, 2016 Page 1 of 6
EF 151 Exam #2 - Spring, 2016 Page 1 of 6 Name: Section: Instructions: Sit in assigned seat; failure to sit in assigned seat results in a 0 for the exam. Put name and section on your exam. Put seating
BROCK UNIVERSITY. Name: Student #: Page 1 of 12
Name: Student #: BROCK UNIVERSITY Page 1 of 12 Final Exam: July 2016 Number of pages: 12 (+ formula sheet) Course: PHYS 1P21/1P91 Number of students: 104 Examination date: 9 July 2016 Number of hours:
Copyright 2014 Edmentum - All rights reserved.
Copyright 2014 Edmentum - All rights reserved. AP Physics Blizzard Bag 2014-2015 Classical Mechanics 1. A block of mass 4.0 kg is attached to the end of a spring. The spring stiffness constant is 25 N/m.
Dynamic analysis and motion measurement of ski turns using inertial and force sensors
Available online at www.sciencedirect.com Procedia Engineering 6 ( 213 ) 355 36 6th Asia-Pacific Conference on Sports Technology Dynamic analysis and motion measurement of ski turns using inertial and
Physics 23 Exam 1 Spring 2009 Dr. Alward Page 1
Physics 23 Exam 1 Spring 2009 Dr. Alward Page 1 1. An arrow is fired upward at a speed of 100 m/s. What will be its height (in meters) one second before it reaches its maximum height? A) 505 B) 496 C)
Regents Exam Practice: Measurement, Kinematics, Free Fall, PJM, and UCM
Regents Exam Practice: Measurement, Kinematics, Free Fall, PJM, and UCM 1. Which quantity and unit are correctly paired? 2. Which is a derived unit? meter second kilogram Newton 3. The fundamental unit
Very Basic Design Considerations for Water-Bottle Rockets
Very Basic Design Considerations for Water-Bottle Rockets The next few pages are provided to help in the design of your water-bottle rocket. Read through this packet and answer the questions on the last
Question: Bicycles. Vehicle s Static Stability, Part 1. Observations About Bicycles. Vehicle s Static Stability, Part 2
Bicycles 1 Bicycles 2 Question: Bicycles How would raising the height of a small pickup truck affect its turning stability? 1. Make it less likely to tip over. 2. Make it more likely to tip over. 3. Have
Gait. Kinesiology RHS 341 Lecture 12 Dr. Einas Al-Eisa
Gait Kinesiology RHS 341 Lecture 12 Dr. Einas Al-Eisa Definitions Locomotion = the act of moving from one place to the other Gait = the manner of walking Definitions Walking = a smooth, highly coordinated,
National Skills Assessment Participants Manual
Participants Manual Contents Introduction 5 Equipment 5 Skills Assessment Table 5 Score Table 6 Phase 3 7 Phase 4 12 Phase 5 17 3 National Alpine Committee Mission To support Alpine and Ski Cross athletes
Agood tennis player knows instinctively how hard to hit a ball and at what angle to get the ball over the. Ball Trajectories
42 Ball Trajectories Factors Influencing the Flight of the Ball Nathalie Tauziat, France By Rod Cross Introduction Agood tennis player knows instinctively how hard to hit a ball and at what angle to get
Force and Motion Test Review
Name: Period: Force and Motion Test Review 1. I can tell you that force is.. 2. Force is measured in units called. 3. Unbalanced forces acting on an object will MOST LIKELY cause the object to A. remain
Homework #10 Due Monday, May Compute the moment of inertia of the objects below.
Homework #10 Due Monday, May 1. Compute the moment of inertia of the objects below. θ (a) Compute the moment of inertia of a thin rod of mass M and length R for rotations about its end. Explain why your
NEWTON S LAWS OF MOTION
NEWTON S LAWS OF MOTION Force The ability to cause a change in a state of motion of an object (Vector) The only thing that can cause an object to accelerate is a Force An object at rest will remain at
LESSONS 1, 2, and 3 PRACTICE EXERCISES
LESSONS 1, 2, and 3 PRACTICE EXERCISES The following items will test your grasp of the material covered in these lessons. There is only one correct answer for each item. When you complete the exercise,
Description Key Points Skill Highlights. traversing
The following list of proven exercises has been used for years to enhance your and your students learning experiences. All of these exercises blend the basic skills but can be used to heighten individual
Give Wings to Imagination
Give Wings to Imagination Water rocket uses water as a propellant. PRINCIPLE It is based on the NEWTON S THIRD LAW OF MOTION. For a simple model, water rocket consists of a bottle having water above
1. Determine his speed when he reaches the photo radar car.
Physics Unit Review 5 Use the following information to answer the next two questions. Mr. Buffi is cruising at 18.9 m/s when he sees a suspicious car (perhaps a photo radar car?) parked on the side of
Aim To investigate the effect of drag on cones of various sizes, dropped through the air.
Aim Discovery Sheet To investigate the effect of drag on cones of various sizes, dropped through the air. Equipment four BLOODHOUND SSC cone templates scissors PVA glue (Pritt Stick type) 3m retractable
AP Physics B Fall Final Exam Review
Name: Date: AP Physics B Fall Final Exam Review 1. The first 10 meters of a 100-meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant acceleration. The
#5 Regulate the magnitude of pressure created through ski/snow contact. Pressure Control Movements (PCM)
Task Level WTLF (What to Look For) Skill Falling Leaf 2 A series of forward and backward shaped #1 Control the relationship of the COM to the base of support to direct diagonal sideslips 1 cat track wide
Acceleration= Force OVER Mass. Design Considerations for Water-Bottle Rockets
Acceleration= Force OVER Mass Design Considerations for Water-Bottle Rockets The next few pages are provided to help in the design of your water-bottle rocket. Read through this packet and answer the questions
Circular Motion - Horizontal
Circular Motion - Horizontal Outcome(s): explain and apply the concepts of centripetal acceleration and centripetal force, as applied to uniform horizontal circular motion. A bucket being swung around
Butterfly Technique Checklist
1 Butterfly Technique Checklist Marion Alexander, Brad Gerbrandt Sport Biomechanics Laboratory, University of Manitoba Armstroke Entry - Arms enter the water with hands about shoulder width apart and slice
5. A bead slides on a curved wire, starting from rest at point A in the figure below. If the wire is frictionless, find each of the following.
Name: Work and Energy Problems Date: 1. A 2150 kg car moves down a level highway under the actions of two forces: a 1010 N forward force exerted on the drive wheels by the road and a 960 N resistive force.
READING, EDITING AND PRESENTING THE ALPINE CERTIFICATION GUIDE IS LIKE THIS IMAGE BECAUSE..
READING, EDITING AND PRESENTING THE ALPINE CERTIFICATION GUIDE IS LIKE THIS IMAGE BECAUSE.. CERTIFICATION KEY UPDATES 2016-2017 Why the updates? Skiing updates Level 2 teaching Level 1 Examiner assessments
The Fly Higher Tutorial IV
The Fly Higher Tutorial IV THE SCIENCE OF FLIGHT In order for an aircraft to fly we must have two things: 1) Thrust 2) Lift Aerodynamics The Basics Representation of the balance of forces These act against
Beliefs, attitudes and values Learning styles and preferences. Physical conditioning and health Motivations, understandings and desires
LEVEL I INDOOR GUIDE To help guide you in covering the National Standards categories for Teaching and Professional Knowledge for Level I, the following topics can be reviewed during the indoor sessions,
JSUNIL TUTORIAL,BIHAR FORCE AND PRESSURE. Forces which act only when there is physical contact between two interacting objects are known as
FORCE AND PRESSURE A force is a push or pulls acting on an object which changes or tends to change the state of the object. In the international system of units (SI System), the unit of force is Newton
Honors Physics Semester 2 Final Exam Review
Honors Physics Semester 2 Final Exam Review 1600 kg 800 kg 9 m/s A truck with mass 1600 kg collides with a car with mass 800 kg at rest. They stick together and continue to move to the right. 1. What is
ITF Coaches Education Programme Coaching High Performance Players Course Power and the Tennis Serve.
ITF Coaches Education Programme Coaching High Performance Players Course Power and the Tennis Serve. By Machar Reid & Miguel Crespo A Powerful Serve A Key Ingredient of Successful Tennis Performance Preparation
TEACHING MODEL ASSESS PRACTICE. Senior Geezer Focus - How? November, 2010 Cookie Hale P.J. Jones
Senior Geezer Focus - How? The How is the methodology for coaching skiing; i.e. what you do with your time with your clients, how you communicate and coach skiing. The framework of this time spent coaching
Current issues regarding induced acceleration analysis of walking using the integration method to decompose the GRF
Current issues regarding induced acceleration analysis of walking using the integration method to decompose the GRF George Chen May 17, 2002 Stanford Neuromuscular Biomechanics Lab Group Muscle contribution
Variety is the Spice of Sliding
Variety is the Spice of Sliding Exploring the range of skills and movements with PSIA s 5 Fundamentals Ron LeMaster & Mike Porter November 15, 2016 Ron LeMaster & Mike Porter, 2016 Skiing in the Moment
+ t1 t2 moment-time curves
Part 6 - Angular Kinematics / Angular Impulse 1. While jumping over a hurdle, an athlete s hip angle was measured to be 2.41 radians. Within 0.15 seconds, the hurdler s hip angle changed to be 3.29 radians.
Strokes and Maneuvers:
Strokes and Maneuvers: Sea Kayaking 101 Tim Mattson, tgmattso@gmail.comt Photo by Jodi Wright Outline: Paddling Jargon Evaluating Stokes Photo Gallery Paddling Jargon Everything should be as simple as
Push & Pull You can see the forces push and pull at work with this door. We can push the door to close it, or pull the handle to open it.
Gogglebox Video Script FORCES & MOTION Introduction
Objective: To launch a soda bottle rocket, achieve maximum time of flight, and safely land a payload (tennis ball).
Bottle Rocket Project 2016-17 Objective: To launch a soda bottle rocket, achieve maximum time of flight, and safely land a payload (tennis ball). Materials: 2 liter plastic soda bottle (carbonated beverage
14 The Divine Art of Hovering
14 The Divine Art of Hovering INTRODUCTION Having learned the fundamentals of controlling the helicopter in forward flight, the next step is hovering. To the Hover! In many schools, hovering is one of
2016 Physics Olympics Detailed Rules
2016 Physics Olympics Detailed Rules The UNT Society of Physics Students has hosted their annual Physics Olympics for many years now. Over the years, many teams have competed in a variety of events that
Today Mr. Happer told us to use the following physics vocabulary words and relate them to our experiment:
Design Your Own Experiment Lab Report Objective While making our water rocket, our group tried to achieve different criteria listed by Mr. Happer. With our rocket, we were trying to achieve a distance
Motion, Forces, and Energy Revision (Chapters 3+4)
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
Irrigation &Hydraulics Department lb / ft to kg/lit.
CAIRO UNIVERSITY FLUID MECHANICS Faculty of Engineering nd Year CIVIL ENG. Irrigation &Hydraulics Department 010-011 1. FLUID PROPERTIES 1. Identify the dimensions and units for the following engineering
Section 1 Projectile Motion: Practice Problems 1. You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.
Section 1 Projectile Motion: Practice Problems 1. You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high. How long does it take the stone to reach the bottom of
THE FOUNDATION OF FIT
THE FOUNDATION OF FIT 20 YEARS OF FIT INNOVATION HAVE LED US TO THE PERFECT BALANCE OF PRECISION AND COMFORT FOR EVERY ATHLETE AT EVERY LEVEL INSTANT FIT BOOTS FIT WELL IMMEDIATELY, WITH A LAST SHAPE REFINED
All work on this packet is my own. I have not done anything to give myself or anyone else an unfair advantage on this assignment.
AP Physics Summer Packet Name: Period: All work on this packet is my own. I have not done anything to give myself or anyone else an unfair advantage on this assignment. Signature: I care significantly
WONDERLAB: THE EQUINOR GALLERY. The science and maths behind the exhibits 30 MIN INFORMATION. Topic FORCES. Age
WONDERLAB: THE EQUINOR GALLERY and maths s INFORMATION Age 7 11 11 14 Topic FORCES 30 MIN Location LEVEL 3, SCIENCE MUSEUM, LONDON What s the science? What more will you wonder? and maths s Wonderlab:
DYNAMICS PROBLEM SOLVING
DYNAMICS PROBLEM SOLVING 1. An elevator of mass 800 kg accelerates at 3.0 m/s 2 [down]. What force does the cable exert on the elevator? (5400 N) 2. The engine of a train has a mass of 5.0 x 10 4 kg. It
STATION 1: HOT WHEELIN PHYSICS 1. Define Newton s First Law. 2. Describe the motion of the untaped washer when the car hits the pencils.
Name Date Period STATION 1: HOT WHEELIN PHYSICS 1. Define Newton s First Law. 2. Describe the motion of the untaped washer when the car hits the pencils. 3. Describe the motion of the taped washer when
Turn Type. Turn Size. 1 Forward Most Extended Skidded Medium Closed Using Alignment Blue
Terrain (Bumps) Switch Carved Skidded Cert Level Direction Edge Change Movement Turn Type Turn Size Turn Shape Using Alignment/Separation Terrain 1 Forward Most Extended Skidded Medium Closed Using Alignment
Chapter 6. You lift a 10 N physics book up in the air a distance of 1 meter at a constant velocity of 0.5 m/s. The work done by gravity is
I lift a barbell with a mass of 50 kg up a distance of 0.70 m. Then I let the barbell come back down to where I started. How much net work did I do on the barbell? A) - 340 J B) 0 J C) + 35 J D) + 340
PSIA-RM Development Pathway - Alpine Skiing Standards
Highlighted Skills PSIA-RM Development Pathway - Alpine Skiing Standards Fundamental Mechanics relative to the Skills Concept Pressure Control Rotational Control Edge Control Fore/Aft : Control the relationship
Uncontrolled copy not subject to amendment. Principles of Flight
Uncontrolled copy not subject to amendment Principles of Flight Principles of Flight Learning Outcome 1: Know the principles of lift, weight, thrust and drag and how a balance of forces affects an aeroplane
Winnipeg Headingley Aero Modellers. Things About Airplanes.
Winnipeg Headingley Aero Modellers Things About Airplanes. Table of Contents Introduction...2 The Airplane...2 How the Airplane is Controlled...3 How the Airplane Flies...6 Lift...6 Weight...8 Thrust...9
CHAPTER 7:SIT- SKI. General. Student Assessment
CHAPTER 7:SIT- SKI General A Sit -Ski is used mainly by people with limited use (or absence) of their lower extremities. A sit-ski, consists of a molded seat (bucket) mounted on a metal frame. The bucket
Structure (Down plane)
By Lauren Russell Structure (Down plane) The body (toes, knees, hips, wrists and shoulders) is aligned parallel to the intended target line. The torso is tilted over the ball from the hips whilst maintaining
Swimming Breaststroke Checklist Marion Alexander, Yumeng Li, Adam Toffan, Biomechanics Lab, U of Manitoba
Swimming Breaststroke Checklist Marion Alexander, Yumeng Li, Adam Toffan, Biomechanics Lab, U of Manitoba Glide: -The feet come together, with the hips and knees fully extended. The legs may not be closed