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29 November, 05:37

A 62kg box is lifted 12 meters off the ground. How much work is done?

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  1. 29 November, 06:59
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    Answer: 7291.2 joules

    Explanation:

    Work is done when force is applied on an object over a distance.

    Thus, Workdone = Force X distance

    Since Distance moved by box = 12 metres

    mass of box = 62kg

    Acceleration due to gravity when box was lifted is represented by g = 9.8m/s^2

    Recall that Force = Mass x acceleration due to gravity

    i. e Force = 62kg x 9.8m/s^2

    = 607.6 Newton

    So, Workdone = Force X Distance

    Workdone = 607.6 Newton X 12 metres

    Workdone = 7291.2 joules

    Thus, 7291.2 joules of work was done.
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