Question a 170-m tall person lifts a 250-kg book from the, Ask an Expert

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Question: A 1.70-m tall person lifts a 2.50-kg book from the ground so it is 2.40 m above the ground.

Part A: What is the potential energy of the book relative to the ground? Express your answer to three significant figures and include the appropriate units.

Part B: What is the potential energy of the book relative to the top of the person's head? Express your answer to three significant figures and include the appropriate units.

Part C: How is the work done by the person related to the answers in parts A and B?

1. The work done by the person in lifting the book from the ground to the final height is the same as the answer to part A

2. The work done by the person in lifting the book from the ground to the final height is the same as the answer to part B

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