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The planes of two rigid discs are perpen...

The planes of two rigid discs are perpendicular to each other. They are rotating about their axes. If their angular velocities are 3 rad/sec and 4 rad/sec respectively, then the resultant angular velocity of the system would be

A

1 rad/sec

B

7 rad/sec

C

5 rad/sec

D

`sqrt(12)` rad/sec

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The correct Answer is:
C
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