An object with a mass of $2 k g$ $2 kg$ is hanging from an axle with a radius of $2 c m$ $2 cm$ . If the wheel attached to the axle has a radius of $16 c m$ $16 cm$ , how much work would it take to turn the wheel a length equal to the circumference of the axle?

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Answer 1 · 2017-02-25T06:35:55

The work done is $= 2.46 J$ $=2.46J$

Mass $= 2 k g$ $=2kg$

Radius of axle $= 0.02 m$ $=0.02m$

Radius of wheel $= 0.16 m$ $=0.16m$

Cicumference of axle $= 2 π r = 2 \cdot 0.02 \cdot π = 0.126 m$ $=2pir=2*0.02*pi=0.126m$

Work done $= m g h = 2 \cdot 9.8 \cdot 0.126 = 2.46 J$ $=mgh=2*9.8*0.126=2.46J$

An object with a mass of 2kg2 kg is hanging from an axle with a radius of 2cm2 cm. If the wheel attached to the axle has a radius of 16cm16 cm, how much work would it take to turn the wheel a length equal to the circumference of the axle?