A man climbs on to a wall that is 3.6 m high and gains 2268 J of potential energy. What is the weight of the man?

630 N

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63 N

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6.3 N

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2268 N

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Solution

The correct option is A 630 N
Potential energy , $P E = m g h$
So, mass $m = \frac{P E}{h g} = \frac{2268}{3.6 \times 10} = 63 k g$

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