An object with a mass of $8 kg$ is hanging from an axle with a radius of $15 cm$ . If the wheel attached to the axle has a radius of $75 cm$ , how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-04-17T11:43:03

The force applied is $=15.68N$

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The load $=(8g)N$

Radius of axle $r=0.15m$

Radius of wheel $R=0.75m$

Taking moments about the center of the axle

$F*0.75=8*g*0.15$

$F=(8*g*0.15)/0.75=15.68N$

An object with a mass of 8 kg8 kg is hanging from an axle with a radius of 15 cm15 cm. If the wheel attached to the axle has a radius of 75 cm75 cm, how much force must be applied to the wheel to keep the object from falling?