What is the work done by gravity as a 10 kg object falls from rest at 12m to 5m?​

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What is the work done by gravity as a 10 kg object falls from rest at 12m to 5m?​

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Minh Khuê 4 years 2021-08-09T12:18:30+00:00 1 Answers 12 views 0

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  1. Nho
    0
    2021-08-09T12:20:21+00:00
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    Answer: 686 joules

    Explanation:

    Work done = ?

    Mass of fallen object = 10 kg

    Height = (12m – 5m) = 7metres

    (The height is 7metres because the object fell from an height of 12m to 5m)

    Acceleration due to gravity g = 9.8m/s2

    Workdone = Mass x Acceleration due to gravity x height

    = 10kg x 9.8m/s2 x 7 metres

    = 686 joules

    Thus, the work done by gravity is 686 joules

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