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 $28 m$ , how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2018-01-05T18:41:13

The force is $F=1.4N$

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The load is $L=2gN$

The radius of the axle is $r=2m$

The radius of the wheel is $R=28m$

The effort is $=FN$

The acceleration due to gravity is $g=9.8ms^-2$

Taking moments about the center of the axle

$F*28=2g*2$

$F=(2g*2)/28=1.4N$

The force is $F=1.4N$

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 28 m28 m, how much force must be applied to the wheel to keep the object from falling?