An object has gravitational potential energy of 24 joules when it rests on a shelf 3 m above the ground. What would be its gravitational pot

Question

An object has gravitational potential energy of 24 joules when it rests on a shelf 3 m above the ground. What would be its gravitational potential energy when it is lowered to a shelf 1 m above the ground?

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Dulcie 4 years 2021-08-17T07:08:07+00:00 1 Answers 48 views 0

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  1. ngockhue
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    2021-08-17T07:09:52+00:00
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    The equation for the gravitational potential energy Ep is:

    Ep=m*g*h where m is the mass of the body, g=9.81 m/s² and h is the height of the body.

    First we need to find the mass of the body:

    m=Ep/(g*h)=24/(9.81*3)=0.82 kg

    Now lets see what it’s gravitational potential energy would be on the height of 1 m.

    Ep=0.82*9.81*1 = 8 J

    On the height of 1 m the body has a gravitational potential energy of Ep=8 J.

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