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25 December, 10:01

A 4 kg vase sits on a shelf at a height of 1.2m. How much gravitational potential energy is added tot eh base when it is lifted to a shelf of height 1.4 m?

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  1. 25 December, 13:29
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    Gravitational Potential Energy = mgh

    In this case the gravitational potential energy added is that as a result of the change in height.

    = mgΔh g ≈ 9.8m/s²

    = mg (h₂ - h₁)

    = 4*9.8 * (1.4 - 1.2)

    = 7.84J

    GPE added = 7.84J
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