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 $=mgh=7*9.8*0.94=64.7J$

An object with a mass of 7 kg7 kg is hanging from an axle with a radius of 15 cm15 cm. If the wheel attached to the axle has a radius of 125 cm125 cm, how much work would it take to turn the wheel a length equal to the circumference of the axle?