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A metal rod of length 'L' and mass 'm' i...

A metal rod of length `'L'` and mass `'m'` is piovted at one end. A thin disk of mass `'M'` and radius `'R' (lt L)`. Is attached at its centre to the free end of the rod. Consider two ways the disc is attached: (case `A`). The disc is not free to rotate about its centre and (case `B`) the disc is free to rotate about its center. The rod-disc sustem perform `SHM` in vertical plane after being released from the same displaced potion. Which of the following statement(s) is (are) true?

A

Restoring torque in case A = Restoring torque in case B

B

Restoring torque in case A `lt `Restoring torque in case B

C

Angular frequency for case A `gt` Angular frequency for case

D

Angular frequency for case A `lt` Angular frequency for case B

Text Solution

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The correct Answer is:
A, D
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