An object with a mass of #18 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?

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Answer 1 · 2017-06-03T06:50:10

The force is #=1411.2N#

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The load L=(18g)N#

Radius of axle #r=0.16m#

Radius of wheel #R=0.02m#

Taking moments about the center of the axle

#F*R=L*r#

#F*0.02=18*g*0.16#

#F=(18*g*0.16)/0.02=1411.2N#

The force is #=1411.2N#