Question

An object with a mass of `8 kg` is hanging from an axle with a radius of `12 m`. If the wheel attached to the axle has a radius of `48 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `F=19.6N`

Explanation:

The load is `L=8gN`

The radius of the axle is `r=12m`

The radius of the wheel is `R=48m`

The effort is `=FN`

The acceleration due to gravity is `g=9.8ms^-2`

Taking moments about the center of the axle

`F*48=8g*12`

`F=(8g*12)/48=N`

The force is `F=19.6N`