A 30 kg child climbs 15 meters up a tree when he stops to have a look around. What is the child's potential energy in joules?
[Assume $g = 10 m / s^{2}$ ]

1500

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3000

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4500

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6000

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Solution

The correct option is C 4500
Given, mass of the child is $m = 30 k g$ and the climbing height $h = 15 m$
So, the potential energy $P E = m g h = 30 \times 10 \times 15 = 4500 J$

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