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Potential Energy of an Object at a Height

A vessel cont...

Question

A vessel containing 50 kg of water is placed at a height of 15 m above the ground.Assuming the gravitational potential energy at ground to be zero,what will be the gravitational potential energy,of water in the vessel?(g=10 m $s^{- 2}$ )

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Solution

Gravitational potential energy $= m g h = 50 \times 10 \times 15 = 7500 J$

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