Question

An object with a mass of `6 kg` is hanging from an axle with a radius of `9 m`. If the wheel attached to the axle has a radius of `6 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=88.2N`

Explanation:

The load is `L=6gN`

The radius of the axle is `r=9m`

The radius of the wheel is `R=6m`

The effort is `=FN`

Taking moments about the center of the axle

`F*6=6g*9`

`F=6g*9/6=88.2N`

The force is `F=88.2N`