Equal torques act on tlie discs A and B of the previous problem, initi

1.	Equal torques act on tlie discs A and B of the previous problem, initially both being at rest. At a later instant, the linear speeds of a point on the rim of A and smother point on the rim of B are vA and vB respectively. We have (a) vA>vB (b) vA = vB (c) vA < vB (d) the relation depends on the actual magnitude of the torques.
Answer» The correct answer is (a) v_A > v_B Explanation: Let T be the torque and A and A' be the angular accelerations. A = T/IA and A' = T/IB. Clearly A >A'. In fact, the ratio of the moment of Inertias is 64. So at a later instant, the angular velocity of the first disc will be much greater than the second. Hence option (a).

Equal torques act on tlie discs A and B of the previous problem, initially both being at rest. At a later instant, the linear speeds of a point on the rim of A and smother point on the rim of B are vA and vB respectively. We have (a) vA>vB (b) vA = vB (c) vA < vB (d) the relation depends on the actual magnitude of the torques.

Answer»

The correct answer is

(a) v_A > v_B

Explanation:

Let T be the torque and A and A' be the angular accelerations. A = T/IA and A' = T/IB. Clearly A >A'. In fact, the ratio of the moment of Inertias is 64. So at a later instant, the angular velocity of the first disc will be much greater than the second. Hence option (a).

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