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26 August, 02:45

A cinder block is sitting on a platform 20m high. It weighs 79N.

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  1. 26 August, 02:48
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    A cinder block is stationary it means it only has potential energy.

    Explanation:

    The cinder block is not moving so it has been storing the potential energy. We can find the potential energy of the block by using the formula as:

    Potential energy (PE) = mgh

    where,

    m = mass of the block

    g = acceleration due to gravity

    h = height of the block

    Now,

    PE = 79 * 20 J

    or, PE = 1580 J

    The energy stored by the block as potential energy is 1580 J.
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