An object with a mass of 5kg is hanging from an axle with a radius of 24cm. If the wheel attached to the axle has a radius of 15cm, how much work would it take to turn the wheel a length equal to the circumference of the axle?

1 Answer
Apr 8, 2017

The work done is =118.2J

Explanation:

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The load =(5g)N

Radius of axle r=0.24m

Radius of wheel R=0.15m

Taking moments about the center of the axle

F0.15=5g0.24

F=5g0.240.15=78.4N

The work done is

W=Fd

d=2π0.24

W=78.4π0.48=118.2J