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 ω about the same axis. The final angular velocity of the combination of discs is - VgyanHub

Question:

27.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 ω about the same axis. The final angular velocity of the combination of discs is

Options :

a) 4 rad/sec
b) 2 rad/sec
c) 3 rad/sec
d) 6 rad/sec

Answer :

c) 3 rad/sec

Answer Steps :

Step1 :-

Step2 :-

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