question_answer 28)

A disc rotating about its axis with angular speed coq is placed lightly (without any translational push) on a perfectly frictionless table. The radius of the disc is R What are the linear velocities of the points A B and C on the disc shown in Fig. 7.108 ? Will the disc roll in the direction indicated ?  

Answer:

We know that, For point A : (in the direction of the arrow) For point B: (in the direction opposite to arrow)   For point C: (in the direction of the arrow) The disc will not roll in the direction indicated. It is because the disc is placed on a perfectly frictionless table and without friction, a body cannot roll.