An object with a mass of #8 kg# is hanging from an axle with a radius of #9 m#. If the wheel attached to the axle has a radius of #21 m#, how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-03-07T16:24:26

The force is #=33.6N#

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The load #=8gN#

Radius of axle #r=9m#

Radius of wheel #R=21m#

Taking moments about the center of the axle

#F*21=8g*9#

#F=(8g*9)/21=33.6N#