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Classical Mechanics

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Work Done by Gravity Conditions

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Which of the following statements about the work done by gravity is correct?

A

Gravity always does more work on a ball that rolls down a steep hill than it does on a ball that rolls down a more gradual hill.

B

When an object falls, the amount of work done by gravity depends on how much air resistance affects the object.

C

If two objects slide down to the bottom of a ramp from the same height, gravity always does more work on the more massive object, regardless of the effects of friction.

D

A falling object will always acquire a greater velocity when gravity has done more work on it.