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A large disc has mass 2kg and radius 0.2...

A large disc has mass 2kg and radius 0.2 m and initial angular velocity 50 rad/s and small disc has mass 4kg and radius 0.1 m and initial angular velocity 200 rad/s both rotating about their common axis. Then the common final angular velocity after discs are in contact is,

A

40

B

60

C

100

D

120

Text Solution

Verified by Experts

The correct Answer is:
C
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