power required by a machine in raising a load

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asked Aug 12, 2017 in Engg-mechanics by chandu (215k points)

The power required by a machine having an efficiency of 80% for raising a load of 24 N through a distance of 36 m in 1 minute is

(a) 12 W (b) 18 W (c) 50 W (d) 450 W

iasprelims
1998
engg-mechanics
workdone&power

power required by a machine in raising a load

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