A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. How much power was used?

Question

A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. How much power was used?

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Huyền Thanh 3 years 2021-09-04T08:49:55+00:00 1 Answers 3 views 0

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  1. quangkhai
    0
    2021-09-04T08:51:27+00:00
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    Answer:

    25 watts

    Explanation:

    Power=work/time

    work=force x distance

    1000 × 3

    =3000 Joules

    power= 3000/120

    =25 watts

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