An object with a mass of #3 kg# is hanging from an axle with a radius of #6 cm#. If the wheel attached to the axle has a radius of #16 cm#, how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2018-04-12T05:56:15

The force is #F=11.03N#

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The load is #L=3gN#

The radius of the axle is #r=0.06m#

The radius of the wheel is #R=0.16m#

The effort is #=FN#

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

Taking moments about the center of the axle

#F*0.16=3g*0.06#

#F=(3g*0.06)/0.16=11.03N#

The force is #F=11.03N#