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16 July, 03:03

If you lift a 20N box of toys to the top shelf of a closet that is 3 m high, how much gravitational potential energy will the box have?

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  1. 16 July, 03:17
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    60 J

    Explanation:

    Potential Energy: This can be defined as the energy possessed by a body, due to its position. The S. I unit of potential energy is Joules. The Formula of potential energy is given as

    Ep = mgh or

    Ep = Wh ... Equation 1

    Where Ep = Potential energy of the box, W = Weight of the box, h = Height.

    Given: W = 20 N, h = 3 m.

    Substitute into equation 1

    Ep = 20*3

    Ep = 60 J.

    Hence the gravitational potential energy of the box = 60 J
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