An object with a mass of 3 kg is hanging from an axle with a radius of 16 cm. If the wheel attached to the axle has a radius of 2 cm, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Jun 7, 2018

The force is F=235.2N

Explanation:

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The load is L=3gN

The radius of the axle is r=0.16m

The radius of the wheel is R=0.02m

The effort is =FN

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

Taking moments about the center of the axle

F*0.02=3g*0.16

F=(3g*0.16)/0.02=235.2N

The force is F=235.2N