An object with a mass of $2 kg$ is hanging from an axle with a radius of $2 cm$ . If the wheel attached to the axle has a radius of $16 cm$ , 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 · 2017-02-25T06:35:55

The work done is $=2.46J$

Mass $=2kg$

Radius of axle $=0.02m$

Radius of wheel $=0.16m$

Cicumference of axle $=2pir=2*0.02*pi=0.126m$

Work done $=mgh=2*9.8*0.126=2.46J$

An object with a mass of 2 kg2 kg is hanging from an axle with a radius of 2 cm2 cm. If the wheel attached to the axle has a radius of 16 cm16 cm, how much work would it take to turn the wheel a length equal to the circumference of the axle?