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Questions  

A rope of negligible mass is wound round a hollow cylinder of mass 3 kg and radius 40cm. If the rope is pulled with a force of 30N, then the angular acceleration produced in the cylinder is

a
15 rad s–2
b
20 rad s–2
c
25 rad s–2
d
30 rad s–2

detailed solution

Correct option is C

Torque = Iα = F x rFor Hollow cylinder I = Mr2

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