An object with a mass of $3 kg$ is hanging from an axle with a radius of $6 m$ . If the wheel attached to the axle has a radius of $12 m$ , how much force is needed to raise the object?

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Answer 1 · 2017-03-23T14:13:56

The force is $=14.7N$

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The load $=(3g)N$

Radius of axle $r=6m$

Radius of wheel $R=12m$

Taking moments about the center of the axle

$F*12=3*g*6$

$F=(3*g*6)/12=3/2g=14.7N$

An object with a mass of 3 kg3 kg is hanging from an axle with a radius of 6 m6 m. If the wheel attached to the axle has a radius of 12 m12 m, how much force is needed to raise the object?