A pails of mass 10 kg is attached vertically to a pulley so that it can be lifted. The pail is lifted 7 meters how much work was done on the

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A pails of mass 10 kg is attached vertically to a pulley so that it can be lifted. The pail is lifted 7 meters how much work was done on the pail?

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Ngọc Diệp 2 months 2021-08-01T11:20:23+00:00 1 Answers 3 views 0

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    2021-08-01T11:21:58+00:00

    Answer: 686 joules

    Explanation:

    Given that,

    mass = 10 kg

    distance = 7 meter

    Work done on the pail = ?

    Recall that work is done when force is applied on an object over a distance.

    i.e Work = Force x distance (h)

    (since force = mass x acceleration due to gravity (g))

    Work = mgh

    Work = 10kg x 9.8m/s^2 x 7m

    Work = 686 joules

    Thus, 686 joules of work was done on the pail.

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