Question

An object with a mass of `3 kg` is hanging from an axle with a radius of `6 m`. If the wheel attached to the axle has a radius of `12 m`, how much force is needed to raise the object?

Answer 1

The force is `=14.7N`

Explanation:

The load `=(3g)N`

Radius of axle `r=6m`

Radius of wheel `R=12m`

Taking moments about the center of the axle

`F*12=3*g*6`

`F=(3*g*6)/12=3/2g=14.7N`