A thin disc of radius R and mass M is free to rotate about a vertical axis passing through its centre and perpendicular to its plane. The disc in initially at rest. A small of mass M/3 is walking along the rim of the disc with a relative speed 'v' with respect to the surface of the disc. What is the angular velocity with which the disc rotates in the opposite direction ?

A thin disc of radius R and mass M is free to rotate about a vertical

1.	A thin disc of radius R and mass M is free to rotate about a vertical axis passing through its centre and perpendicular to its plane. The disc in initially at rest. A small of mass M/3 is walking along the rim of the disc with a relative speed 'v' with respect to the surface of the disc. What is the angular velocity with which the disc rotates in the opposite direction ?
Answer» `(V)/(5R)` `(2v)/(5R)` `(v)/(3R)` `(2v)/(3R)` ANSWER :B