a man pulls a bucket from a depth of 10 m from a well . the masses of rope qnd bucket full of water are 4kg and 4
30 kg respectively. the work done by man is
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rope centre of mass lies at mid point (I.e) ; at 5m
bucket depth= 10m
work = change in potential energy
(m1)g(h1) + (m2)g(h2)
=30*10*10 + 4*10*5 (g=10m/s^2)
=500J (units math bhulna)
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