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A load of $100\ kg$ is pulled up by $5\ m$. Calculate the work done. $(g = 9.8\ m/s^2)$
Here, mass $m=100\ kg$
Height $h=5\ m$
Gravitational acceleration $a=9.8\ m/s^2$
Therefore, work done to pull the load $W=mgh$
$=100\ kg\times9.8\ m/s^2\times5\ m$
$=4900\ J$
Thus, work done to pull the load is $4900\ J$.
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