COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 14QAP
To determine
What distinguishes the forces that act on a car driving over the top of a hill from those acting on a car driving through a dip in the road
How the forces are related to the sensations experienced by passengers in the car during each situation?
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Suppose you are performing an experiment on a crate of 45-kg tools resting on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 313 N. After that you must reduce your push to 208 N to keep it moving at a steady 25 cm/s.a. What are the coefficients of static and kinetic friction between the crate and the floor?b. Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s2, what magnitude push would cause it to move?
Problem 3: You need to push a box across carpet. The box and its contents have a mass of 75 kg. The
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A. You push horizontally on the box with a force of 300 N. Draw a free-body diagram for this
scenario. What is the magnitude of all the individual forces that act on the box?
B. You now push horizontally on the box with constant force of 500 N. Draw a free body diagram
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C. What is the net force and acceleration for the box while you push with the 500 N?
Two blocks are connected via a pulley, both blocks have a mass of 10.kg. One block rests on a horizontal surface and the other one hangs freely by a cord which passes over a pulley. Assume the cord does not stretch, ignore mass of pulley and cord, therefore acceleration is the same for both blocks and tension is the same for both blocks. The hanging block moves down so the block lying on the horizontal surface moves to the right.
What is the acceleration (m/s^2) of the blocks if the coefficient of friction between the block and the surface is 0.50.
Chapter 5 Solutions
COLLEGE PHYSICS
Ch. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAPCh. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAP
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- Two blocks are connected via a pulley, both blocks have a mass of 10.kg. One block rests on a horizontal surface and the other one hangs freely by a cord which passes over a pulley. Assume the cord does not stretch, ignore mass of pulley and cord, therefore acceleration is the same for both blocks and tension is the same for both blocks. The hanging block moves down so the block lying on the horizontal surface moves to the right. What is the acceleration (m/s^2) of the blocks if the coefficient of friction between the block and the surface is 0.50. Note: Please express finals answers in significant figures and scientific notation only, thanks!!arrow_forwardAt time t = 0s, the 50 N crate is sitting at rest on the floor. There is a coefficient of static friction us=0.400 between the floor and the crate. There is a coefficient of static friction H=0.200 between the floor and the crate. An applied force F = 12.0 N is acting to on the box to the right. A) What is the value of the frictional force the box feels at time t = 0? f = B What is the value of the frictional force the box feels at time t > 0? f = Consider the exact same situation, except the applied force is F=24.0 N. c) What is the value of the frictional force the box feels at time t = 0? f = D What is the value of the frictional force the box feels at time t = 0? f = to searcharrow_forwardTwo objects are connected by a string passing over a frictionless pulley. When the objects are in motion object A experiences a force of kinetic friction with a magnitude equal to 5.0 N. The mass of object A is 2.1 kg and the mass of object B is 3.3 kg. Determine the magnitude of acceleration for the system. Determine the magnitude of the tension in the string.arrow_forward
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