An object with a mass of $2 kg$ is hanging from an axle with a radius of $2 m$ . If the wheel attached to the axle has a radius of $8 m$ , how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-04-15T06:38:05

The force is $=4.9N$

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The load $=(2g)N$

Radius of axle $r=2m$

Radius of wheel $R=8m$

Taking moments about the center of the axle

$F*8=2*g*2$

$F=(2*g*2)/8=4.9N$

An object with a mass of 2 kg2 kg is hanging from an axle with a radius of 2 m2 m. If the wheel attached to the axle has a radius of 8 m8 m, how much force must be applied to the wheel to keep the object from falling?