An object with a mass of #5 kg# is hanging from an axle with a radius of #30 m#. If the wheel attached to the axle has a radius of #9 m#, how much force must be applied to the wheel to keep the object from falling?

1 Answer
Jun 18, 2017

Answer:

The force is #=1.63N#

Explanation:

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The load #L=(5g)N#

Radius of axle #r=0.3m#

Radius of wheel #R=9m#

Taking moments about the center of the axle

#F*R=L*r#

#F*9=5*g*0.3#

#F=(5*g*0.3)/9=1.63N#

The force is #F=1.63N#