An object with a mass of $7 k g$ $7 kg$ is hanging from an axle with a radius of $33 m$ $33 m$ . If the wheel attached to the axle has a radius of $69 m$ $69 m$ , how much force must be applied to the wheel to keep the object from falling?

Question

1272 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-05-06T10:21:22

The force is $= 32.8 N$ $=32.8N$

enter image source here

The load L=(7g)N#

Radius of axle $r = 33 m$ $r=33m$

Radius of wheel $R = 69 m$ $R=69m$

Taking moments about the center of the axle

$F \cdot R = L \cdot r$ $F*R=L*r$

$F \cdot 69 = 7 \cdot g \cdot 33$ $F*69=7*g*33$

$F = \frac{7 \cdot g \cdot 33}{69} = 32.8 N$ $F=(7*g*33)/69=32.8N$

An object with a mass of 7kg7 kg is hanging from an axle with a radius of 33m33 m. If the wheel attached to the axle has a radius of 69m69 m, how much force must be applied to the wheel to keep the object from falling?