A man pulls a 28.4kg block up a 3.62m long ramp inclined at an angle of 25.2° re

Question

A man pulls a 28.4kg block up a 3.62m long ramp inclined at an angle of 25.2° relative to the horizontal. The force pulling the block is parallel to the inclined plane. The block starts at rest at the bottom of the ramp. The block is moving at a speed of 1.17 m/s at the top of the ramp. The coefficient of kinetic friction between the ramp and the block is 0.204.

a) Determine the work done by the applied force, F, on the block.

b) What is the change in kinetic energy of the block?

c) What is the change in potential energy of the block?

d) What was the work done against friction as the block was pulled up the incline?

Explanation / Answer

A man pulls a 28.4kg block up a 3.62m long ramp inclined at an angle of 25.2° re

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