Question

An object with a mass of `2 kg` is hanging from an axle with a radius of `3 m`. If the wheel attached to the axle has a radius of `4 m`, how much force is needed to raise the object?

Answer 1

The force is `=14.7N`

Explanation:

The load L=(2g)N#

Radius of axle `r=3m`

Radius of wheel `R=4m`

Taking moments about the center of the axle

`F*R=L*r`

`F*4=2*g*3`

`F=(6*g)/4=14.7N`