An object with a mass of #5 kg# is hanging from an axle with a radius of #4 m#. If the wheel attached to the axle has a radius of #2 m#, how much force must be applied to the wheel to keep the object from falling?

1 Answer
May 2, 2017

Answer:

The force is #=98N#

Explanation:

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The load L=(5g)N#

Radius of axle #r=4m#

Radius of wheel #R=2m#

Taking moments about the center of the axle

#F*R=L*r#

#F*2=5*g*4#

#F=(5*g*4)/2=10g=98N#