An object with a mass of #4 kg# is hanging from an axle with a radius of #15 m#. If the wheel attached to the axle has a radius of #18 m#, how much force is needed to raise the object?

1 Answer
May 5, 2017

Answer:

The force is #=32.7N#

Explanation:

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The load L=(4g)N#

Radius of axle #r=15m#

Radius of wheel #R=18m#

Taking moments about the center of the axle

#F*R=L*r#

#F*18=4*g*15#

#F=(4*g*15)/18=32.7N#