BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Textbook Question
Chapter 1, Problem 10IP
A 0.5 kg ball is kicked with a force of 40 N. What is the resulting acceleration of the ball?
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2. a) Label the system provided below, including the reference frame, moment arms and vector forces
with the information provided.
Internal moment arm = 4cm +0.04m
External moment arm relative
to the segment weight = 25cm 0.25m
External moment arm relative
to the load weight = 45cm 40.45m
Segment weight = 50 N
Load weight = 100 N
Lower leg segment angle relative
to horizontal plane = 45°
Quadriceps tendon angle = 45°
Axis of
rotation
MF
SW
LW
2b) Using the figure in 2a., calculate the external torque of the system relative to the normal
component of segment and load weights listed above.
2c) Calculate the amount of both the tangential component of the muscle force and the muscle force
itself required to keep this system in a state of static equilibrium.
A) Describe the difference between strength and power during a squat. Provide a quantitative example that illustrates the difference.
B) During a squat, the weight you have on your shoulders has a certain amount of gravitational potential energy. As you squat down and come to a stop at the bottom of the squat, some of that energy is lost. Where does it go?
Based on the acceleration in the above ball rolling down an inclined plane (with vo = 0 meters per second), how far would it have traveled along the inclined plane in the first six seconds of rolling?
9 meters
16 meters
25 meters
36 meters
49 meters
Chapter 1 Solutions
BASIC BIOMECHANICS
Ch. 1 - Write a brief discussion about how knowledge of...Ch. 1 - Prob. 4IPCh. 1 - Write a summary list of the problem-solving steps...Ch. 1 - Prob. 6IPCh. 1 - Step by step, show how to arrive at a solution to...Ch. 1 - Solve for x in each of the equations below. Refer...Ch. 1 - Two schoolchildren race across a playground for a...Ch. 1 - A 0.5 kg ball is kicked with a force of 40 N. What...Ch. 1 - When attempting to balance your checkbook, you...Ch. 1 - Prob. 3AP
Ch. 1 - Wendell invests 10,000 in a stock portfolio made...Ch. 1 - The hypotenuse of right triangle ABC (shown here)...Ch. 1 - In triangle DEF, side E is 4 cm long and side F is...Ch. 1 - An orienteer runs 300 m north and then 400 m to...Ch. 1 - Prob. 8APCh. 1 - Prob. 9APCh. 1 - A sailboat heads north at 3 m/s for 1 hour and...
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- 1875 N is reduced by 15% by tissues of the ankle joint and 45% by the tissues of the knee joint, how much force is transmitted to the femurarrow_forwarda cat runs across a road that is 9 meters (m) wide. it covered this distance in 3 seconds (s). what is the speed of the car?arrow_forward15. A 2000-kg vehicle travelling 30 m/s takes 10 s to stop. What force did the venicie experience? Show your work. 16. If the time it takes to stop a car doubles, the force the vehicle experiences is Return to page 65 of the Student Module Booklet and begin Lessorarrow_forward
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