Question

An object with a mass of `1 kg` is hanging from an axle with a radius of `16 m`. If the wheel attached to the axle has a radius of `14 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=11.2N`

Explanation:

The load `L=(1g)N`

Radius of axle `r=16m`

Radius of wheel `R=14m`

Taking moments about the center of the axle

`F*R=L*r`

`F*14=1*g*16`

`F=(1*g*16)/14=11.2N`

The force is `F=11.2N`