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8 October, 09:49

3000 J of work are done by an elevator on a man lifting him to a height of 2.5 m in 0.4 seconds ? how much energy has the man gained in being lifted?

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  1. 8 October, 10:55
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    The energy that the man has gained in being lifted is 3000J which is in the form of potential energy.

    Explanation:

    Given:

    Work done, W = 3000J

    Height, h = 2.5m

    Time, t = 0.4 seconds

    Energy gained = ?

    As the man gets lifted, it gains potential energy.

    Potential energy will be equal to the work done by the elevator.

    We know,

    potential energy = mgh

    Thus, the energy that the man has gained in being lifted is 3000J which is in the form of potential energy.
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