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A rope exerts an 18-N force while lowering a 20-kg crate down a plane inclined at...

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Physics

A rope exerts an 18-N force while lowering a 20-kg crate down aplane inclined at 20∘ (the rope is parallel to the plane). A 24-Nfriction force opposes the motion. The crate starts at rest andmoves 11 m down the plane.

Part A:  Determine the final speed of the crate. Thesystem consists of the crate, the surface of the incline andEarth.

Part B: Determine the change in gravitational energy.

Part C: Determine the change in kinetic energy.

Part D: Determine the change in internal energy.

Part E: Determine the work done by the rope.

Answer & Explanation Solved by verified expert
3.9 Ratings (383 Votes)
Given mass of the crate m 20 kg Tension in the rope T 18 N Given kinetic frictional force f as 24 N From the free body diagram we can write the following equation for motion along the incline m g sin20 f T m a a    See Answer
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