Question

An object with a mass of `5 kg` is hanging from an axle with a radius of `12 m`. If the wheel attached to the axle has a radius of `4 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=147N`

Explanation:

The load L=(5g)N#

Radius of axle `r=12m`

Radius of wheel `R=4m`

Taking moments about the center of the axle

`F*R=L*r`

`F*4=5*g*12`

`F=(5*g*12)/4=147N`