A disc starts to rotate from rest and after completing 2 revolutions, it angular velocity is 6.88 rad s-1. The moment of inertia of the disc about its axis of rotation is 1.24 kg
m2. Calculate
(a) The angular acceleration of the disc. Does the disc accelerate or decelerate?
(b) The torque on the disc.

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.