An object with a mass of $2 k g$ $2 kg$ is hanging from an axle with a radius of $3 m$ $3 m$ . If the wheel attached to the axle has a radius of $8 m$ $8 m$ , how much force must be applied to the wheel to keep the object from falling?

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Answer 1 · 2017-03-03T09:25:08

The force is $= 7.35 N$ $=7.35N$

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Taking moments about the center of the axle

$2 g \cdot 3 = F \cdot 8$ $2g*3=F*8$

$F = \frac{6}{8} g = 7.35 N$ $F=6/8g=7.35N$

An object with a mass of 2kg2 kg is hanging from an axle with a radius of 3m3 m. If the wheel attached to the axle has a radius of 8m8 m, how much force must be applied to the wheel to keep the object from falling?