Pieter picked up a 20-newton book from the floor. Then he passed it to Ahmad, who carried it for 20 meters. How much work did Ahmad do?

Question

Pieter picked up a 20-newton book from the floor. Then he passed it to Ahmad, who carried it for 20 meters. How much work did Ahmad do?

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Hải Đăng 3 months 2021-08-17T02:03:55+00:00 1 Answers 6 views 0

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    2021-08-17T02:05:07+00:00

    Answer:

    Work done to move the block from bottom to top is 400 J

    Explanation:

    Work is done against gravity here to move the book from floor to the top

    So here work done is given as

    W = mgH

    here we know that

    mg = 20 N

    also we know that

    H = 20 m

    so we have

    W = 20(20) J

    W = 400 J

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