A body of mass $5 k g$ is taken from a height of $5 m$ to $10 m$ . Find the increase in its potential energy. Take $g = 10 m s^{- 2}$ .

50 J

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150 J

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250 J

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300 J

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Solution

The correct option is C $250 J$
$m = 5 k g, h_{1} = 5 m, h_{2} = 10 m, g = 10 m s^{- 2}$
Increase in potential energy $=$ (final potential energy) $-$ (initial potential energy) $=$ $m g \times (h_{2} - h_{1}) = 5 \times 10 \times (10 - 5) = 250 J$

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