An object with a mass of 300kg is hanging from an axle with a radius of 3cm. If the wheel attached to the axle has a radius of 120cm, how much work would it take to turn the wheel a length equal to the circumference of the axle?

1 Answer
Apr 9, 2017

The work done is =13.85J

Explanation:

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The load =(300g)N

Radius of axle r=0.03m

Radius of wheel R=1.2m

Taking moments about the center of the axle

F1.2=300g0.03

F=300g0.031.2=73.5N

The distance is

d=2π0.03=0.06π

The work done is

W=Fd=73.50.06π=13.85J