PHYSICS F/SCIEN.+ENGRS. W/SAPLING >IC<
PHYSICS F/SCIEN.+ENGRS. W/SAPLING >IC<
6th Edition
ISBN: 9781319336127
Author: Tipler
Publisher: MAC HIGHER
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Chapter 4, Problem 56P
To determine

The free body diagram for the box and the acceleration of the box.

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A horizontal applied force F = 35 N is used topush two blocks along a frictionless frozen lake. Block 1 hasmass m1 = 1.2 kg and block 2 has mass m2 = 2.4 kg. Thereis a static friction force with coefficient µs between the twoblocks that prevents block 1 from slipping downwards. Draw three free-body diagrams: block 1, block 2, and the two-block system. Label the forces. What is the magnitude of the acceleration of the two blocks?What is the minimum value of µs needed to stop block 1 from slipping? If you didn’t answer theprevious part, let a = 16 m/s2.
5 kg and 15 kg blocks are superpositioned and in a rest position on a frictionless table. The coefficients of friction between the blocks are us = 0.4 and µk = 0.2. A horizontal force F = 90 N is applied to the lower block. Draw free-body diagrams and find the acceleration&direction of each block.
A chair of mass 12.0 kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 40.0 N that is directed at an angle of 37.0 below the horizontal, and the chair slides along the floor. (a) Draw a clearly labeled free-body diagram for the chair. (b) Use your diagram and Newton’s laws to calculate the normal force that the floor exerts on the chair.

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