A thin disc and a thin ring, both have mass M and radius R. Both rotate about axes through their centre of mass and are perpendicular to their surfaces at the same angular velocity. Which of the following is true?
1
The ring has higher kinetic energy
2
The disc has higher kinetic energy
3
The ring and the disc have the same kinetic energy
4
Kinetic energies of both the bodies are zero since they are not in linear motion