Question

An object with a mass of `7 kg` is hanging from an axle with a radius of `6 m`. If the wheel attached to the axle has a radius of `31 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=13.3N`

Explanation:

The load L=(7g)N#

Radius of axle `r=6m`

Radius of wheel `R=31m`

Taking moments about the center of the axle

`F*R=L*r`

`F*31=7*g*6`

`F=(7*g*6)/31=13.3N`