A uniform 3.00-kg rope 24.0 m long lies on the ground at
Chapter 9, Problem 9.52(choose chapter or problem)
A uniform 3.00-kg rope 24.0 m long lies on the ground at the top of a vertical cliff. A mountain climber at the top lets down half of it to help his partner climb up the cliff. What was the change in potential energy of the rope during this maneuver?
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