Question

An object with a mass of `7 kg` is hanging from an axle with a radius of `58 m`. If the wheel attached to the axle has a radius of `70 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force to be applied is `=56.84N`

Explanation:

The load `=(7g)N`

Radius of axle `r=58m`

Radius of wheel `R=70m`

Taking moments about the center of the axle

`F*70=7*g*58`

`F=(7*g*58)/70=56.84N`