An object with a mass of $4 kg$ is hanging from an axle with a radius of $39 m$ . If the wheel attached to the axle has a radius of $15 m$ , how much force must be applied to the wheel to keep the object from falling?

Question

1267 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-04-27T09:16:01

The force is $=101.9N$

enter image source here

The load L=(4g)N#

Radius of axle $r=39m$

Radius of wheel $R=15m$

Taking moments about the center of the axle

$F*R=L*r$

$F*15=4*g*39$

$F=(4*g*39)/15=101.9N$

An object with a mass of 4 kg4 kg is hanging from an axle with a radius of 39 m39 m. If the wheel attached to the axle has a radius of 15 m15 m, how much force must be applied to the wheel to keep the object from falling?