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 $17 m$ $17 m$ , how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-04-29T07:35:46

The force is $= 133.2 N$ $=133.2N$

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The load L=(7g)N#

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

Radius of wheel $R = 17 m$ $R=17m$

Taking moments about the center of the axle

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

$F \cdot 17 = 7 \cdot g \cdot 33$ $F*17=7*g*33$

$F = \frac{7 \cdot g \cdot 33}{17} = 133.2 N$ $F=(7*g*33)/17=133.2N$

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 17m17 m, how much force must be applied to the wheel to keep the object from falling?