An object with a mass of $3 kg$ is hanging from an axle with a radius of $12 cm$ . If the wheel attached to the axle has a radius of $32 cm$ , how much work would it take to turn the wheel $3 cm$ ?

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Answer 1 · 2017-05-07T06:36:01

The work is $=0.33J$

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The load L=(3g)N#

Radius of axle $r=0.12m$

Radius of wheel $R=0.32m$

Taking moments about the center of the axle

$F*R=L*r$

$F*0.32=3*g*0.12$

$F=(3*g*0.12)/0.32=11.025N$

The distance is

$d=0.03m$

The work done is

$W=Fd=11.025*0.03=0.33J$

An object with a mass of 3 kg3 kg is hanging from an axle with a radius of 12 cm12 cm. If the wheel attached to the axle has a radius of 32 cm32 cm, how much work would it take to turn the wheel 3 cm3 cm?