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10 October, 03:39

Object A has a gravitational potential energy of 24 joules when it rests on a shelf 5m above the ground. Object B has a mass that is three times the mass of Object A. What would be the gravitational potential energy of object B when it rests on a shelf 10m above the ground?

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  1. 10 October, 05:06
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    Potential energy = (mass) (gravity) (height)

    Potential energy is directly proportional to mass and also to height.

    Object-B has 3 times the mass, and 2 times the height of object-A.

    So its potential energy is (3 x 2) = 6 times the PE of object-A.

    6 times (24 joules) = 144 joules.
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