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Potential Energy

What is the m...

Question

What is the mass of a man if he does $3600 J$ of work in climbing a tree $6 m$ tall? $(g = 10 m / s^{2})$

70 k g

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60 k g

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85 k g

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52 k g

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Solution

The correct option is B $60 k g$
$W = 3600 J, d i s t a n c e h = 6 m, g = 10 m s^{- 2}, m a s s m = ?$
As, $W = m g . h$
$m = \frac{F}{g h} = \frac{3600}{10 \times 6} = 60 k g$
Hence, option B is correct.

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