A man of mass 65 kg is holding a bucket of mass 15 kg. He walks 50 m on a level road at a constant speed of 3 ms and then climbs up a hill of height 20 m. What is the work done by the man?
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There is no work done in walking on straight road as speed is constant.
While going on hill
Height = 20m
Total mass = 80Kg
g=9.8 m/s
So
W=mgh
=20*80*9.8
=15680J
While going on hill
Height = 20m
Total mass = 80Kg
g=9.8 m/s
So
W=mgh
=20*80*9.8
=15680J
ypankaj5517:
Wrong
then whats the answer
16kJ
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