An object with a mass of 15 kg is hanging from an axle with a radius of 24 m. If the wheel attached to the axle has a radius of 48 m, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Nov 1, 2017

The force is F=73.5N

Explanation:

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The load is L=15gN

The radius of the axle is r=24m

The radius of the wheel is R=48m

The effort is =FN

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

Taking moments about the center of the axle

F*48=15g*24

F=15g*24/48=73.5N

The force is F=73.5N