JEE · NEET Previous Year Question
A solid sphere of mass and radius is rotating about its diameter. A solid cylinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation ( ) will be [NEET 2016]
Topic: NEET PYQ
Answer: B. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: B
Solution
(b) KE of a rotating rigid body,of sphere,
KE of cylinder,
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