Question

An object with a mass of `1 kg` is hanging from an axle with a radius of `16 m`. If the wheel attached to the axle has a radius of `8 m`, how much force must be applied to the wheel to keep the object from falling?

Answer 1

The force is `=19.6N`

Explanation:

The load L=(1g)N#

Radius of axle `r=16m`

Radius of wheel `R=8m`

Taking moments about the center of the axle

`F*R=L*r`

`F*8=1*g*16`

The force is

`F=(1*g*16)/8=2g=19.6N`