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 12cm?

1 Answer
Apr 19, 2017

The work done is =1.57J

Explanation:

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The load =(4g)N

Radius of axle r=0.08m

Radius of wheel R=0.24m

Taking moments about the center of the axle

F0.24=4g0.08

F=4g0.080.24=13.07N

The work done is

W=Fd

=13.070.12

=1.57J