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A round disc of moment of inertia I2 abo...

A round disc of moment of inertia `I_2` about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia `I_1` rotating with an angular velocity `omega` about the same axis. The final angular velocity of the combination of discs is :-

A

`(l_(2)omega)/(l_(1)+l_(2))`

B

`omega`

C

`(l_(1)omega)/(l_(1)+l_(2))`

D

`((l_(1)+l_(2))omega)/(l_(1))`

Text Solution

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The correct Answer is:
A
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