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NEET Exam Model Paper 11

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Question : 39

Total: 180

A thin rod of mass M and length l stands along z-axis. Its lower end is hinged at the center of a disc of same mass M and radius R. The disc is on XY plane with its center at the origin. The whole arrangement is rotating freely about z-axis with an angular velocity ω0.If the rod falls on disc and rotates with the disc. The angular speed of the arrangement is

ω0R2
l2+R2
3ω0R2
2l2+3R2
6ω0R2
l2+6R2
6ω0R2
l+6R

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