An object with a mass of #7 kg# is hanging from an axle with a radius of #15 cm#. If the wheel attached to the axle has a radius of #125 cm#, how much work would it take to turn the wheel a length equal to the circumference of the axle?

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Answer 1 · 2017-02-24T10:28:34

Work done #=64.7J#

Mass #=7kg#

Radius of axle #=0.15m#

Radius of wheel #=1.25m#

Cicumference of axle #=2pir=2*0.15*pi=0.94m#

Work done #=mgh=7*9.8*0.94=64.7J#