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A man weighing 70 kg carries a weight of 10 kg to the top of a tower 100 m high. Calculate the work done.
Here given, total mass of the man $m=70\ m+10\ kg=80\ kg.$
Height of the tower $h=100\ m$
Therefore, work done to carry the weight to the top of the tower $W=mgh$
$=80\times 9.8\times 100$
$=78,400\ Joule$
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