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

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Answer 1 · 2017-03-12T14:28:15

The force is #=39.2N#

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The load #=8gN#

Radius of axle #r=9m#

Radius of wheel #R=18m#

Taking moments about the center of the axle

#F*18=8g*9#

#F=(8g*9)/18=4g=39.2N#