An object with a mass of #7 kg# is hanging from an axle with a radius of #33 m#. If the wheel attached to the axle has a radius of #60 m#, how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-10-20T06:12:09

The force is #=37.7N#

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The load is #L=7gN#

The radius of the axle is #r=33m#

The radius of the wheel is #R=60m#

The effort is #=FN#

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

Taking moments about the center of the axle

#F*60=7g*33#

#F=7g*33/0=37.7N#

The force is #F=37.7N#