An object with a mass of $3 k g$ $3 kg$ is hanging from an axle with a radius of $9 m$ $9 m$ . If the wheel attached to the axle has a radius of $7 m$ $7 m$ , how much force is needed to raise the object?

Question

1357 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-04-19T05:49:25

The force is $= 37.8 N$ $=37.8N$

enter image source here

The load L=(3g)N#

Radius of axle $r = 9 m$ $r=9m$

Radius of wheel $R = 7 m$ $R=7m$

Taking moments about the center of the axle

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

$F \cdot 7 = 3 \cdot g \cdot 9$ $F*7=3*g*9$

$F = \frac{3 \cdot g \cdot 9}{7} = 37.8 N$ $F=(3*g*9)/7=37.8N$

An object with a mass of 3kg3 kg is hanging from an axle with a radius of 9m9 m. If the wheel attached to the axle has a radius of 7m7 m, how much force is needed to raise the object?