An object with a mass of #4 kg# is hanging from an axle with a radius of #39 m#. If the wheel attached to the axle has a radius of #15 m#, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Apr 27, 2017

Answer:

The force is #=101.9N#

Explanation:

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The load L=(4g)N#

Radius of axle #r=39m#

Radius of wheel #R=15m#

Taking moments about the center of the axle

#F*R=L*r#

#F*15=4*g*39#

#F=(4*g*39)/15=101.9N#