Question

An object with a mass of `8 kg` is hanging from an axle with a radius of `7 m`. If the wheel attached to the axle has a radius of `63 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=8.71N`

Explanation:

The load L=(8g)N#

Radius of axle `r=7m`

Radius of wheel `R=63m`

Taking moments about the center of the axle

`F*R=L*r`

`F*63=8*g*7`

`F=(8*g*7)/63=8.71N`