An object with a mass of 4kg is hanging from an axle with a radius of 8cm. If the wheel attached to the axle has a radius of 24cm, how much work would it take to turn the wheel 22cm?

1 Answer
Jul 17, 2017

The work is =2.87J

Explanation:

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The load L=(4g)N

Radius of axle r=0.08m

Radius of wheel R=0.24m

Taking moments about the center of the axle

FR=Lr

F0.24=4g0.08

F=4g0.080.24=13.07N

The force is F=13.07N

The distance is d=0.22m

The work is

W=Fd=13.070.22=2.87J