Question

A metal ring of mass m and radius R is placed on a smooth horizontal table and is set rotating about its own axis in such a way that each part of the ring moves with speed v. Find the tension in the ring.

Answer 1

Answer is given as,

\(\frac{\omega^2 R}{3} , \frac{4}{3} m\omega^2 R\)

Answer 2

Consider the part OAB;

Let the mass of this strip be ‘dm’