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3 December, 14:27

An object whose mass is 120 kg is located 20 m above a datum level in a location where standard gravitational acceleration exists. Determine the total potential energy, in kJ, of this object.

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  1. 3 December, 16:59
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    U = 23.544 KJ

    Explanation:

    Given that

    mass, m = 120 kg

    Height above the datum, h = 20 m

    Take g = 9.81 m/s²

    The potential energy U is given as

    U = m g h

    m=mass

    h=Height above the datum

    g=Gravitational constant

    Now by putting the value in the above values we get

    U = 120 x 9.81 x 20 J

    U=23544 J

    Potential energy in KJ

    U = 23.544 KJ

    Therefore the answer will be 23.544 KJ.
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