An object with a mass of #1 kg# is hanging from an axle with a radius of #16 m#. If the wheel attached to the axle has a radius of #84 m#, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Sep 3, 2017

Answer:

The force is #F=1.87N#

Explanation:

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The load is #L=1gN#

The radius of the axle is #r=16m#

The radius of the wheel is #R=84m#

The effort is #=FN#

Taking moments about the center of the axle

#F*84=1g*16#

#F=1g*16/84=1.87N#

The force is #F=1.87N#