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If you slide down a rope, it's possible to create enough thermal energy to burn your hands or your legs where they grip the rope.

If you slide down a rope, it's possible to create enough thermal energy to burn your hands or your legs where they grip the rope. Suppose a 40 kg child slides down a rope at a playground, descending 2.5 mm at a constant speed.

Part A: How much work does gravity do on the child as he slides down the rope?

answer: 980 J

Part B: What is the change in thermal energy?

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