An object with a mass of #8 kg# is hanging from an axle with a radius of #15 m#. If the wheel attached to the axle has a radius of #9 m#, how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-05-24T05:17:45

The force is #=130.7N#

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The load L=(8g)N#

Radius of axle #r=15m#

Radius of wheel #R=9m#

Taking moments about the center of the axle

#F*R=L*r#

#F*9=8*g*15#

#F=(8*g*15)/9=130.7N#

The force is #=130.7N#