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How much is the mass of a man if he has to do $2500\ joules$ of work in climbing a tree $5\ m$ tall? $(g=10 m/s^2)$
Here given, work done by man to climb $m=2500\ Joule$
Height of the tree $h=5\ m$
Gravitational acceleration $g=10\ m/s^2$
Let $m$ be the mass of the man.
On placing these values in the equation $W=mgh$
$2500\ J=m\times 10\ m/s^2\times 5\ m$
Or $m=\frac{2500}{50}$
Or $m=50\ kg$
Thus, mass of the man is $50\ kg$.
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