An object with a mass of #3 kg# is hanging from an axle with a radius of #9 m#. If the wheel attached to the axle has a radius of #7 m#, how much force is needed to raise the object?

1 Answer
Apr 19, 2017

Answer:

The force is #=37.8N#

Explanation:

enter image source here

The load L=(3g)N#

Radius of axle #r=9m#

Radius of wheel #R=7m#

Taking moments about the center of the axle

#F*R=L*r#

#F*7=3*g*9#

#F=(3*g*9)/7=37.8N#