Question

A solid cylindrical drum of mass M = 1.5kg and length L = 2.0m rotates about the central

diameter when a toque τ = 9.0 Nm acts on it to give it an angular velocity 𝜔𝑜=5 rad/s.

After the drum rotates through θ = 50 radians it acquires an angular velocity of ω =

30rad/s. for this drum

(a) Show that the radius R is 𝑅 = [- ]𝑀(𝜔2- 𝜔𝑜2) 38𝜃𝜏 𝐿212

(b) Calculate the radius of the drum

Answer 1

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