An object with a mass of 6 kg is hanging from an axle with a radius of 7 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?

1 Answer
Sep 21, 2017

The force is =14.7N

Explanation:

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The load is L=6gN

The radius of the axle is r=7m

The radius of the wheel is R=28m

The effort is =FN

Taking moments about the center of the axle

F*28=6g*7

Plugging in the value of g=9.8ms^-2

F=6g*7/28=14.7N

The force is F=14.7N