A ring of mass 10 kg and diameter 0.4 me...

A ring of mass 10 kg and diameter 0.4 meter is rotating about its geometrical axis at 1200 rotations per minute. Its moment of inertia and angular momentum will be respectively:-

A

0.4 kg-`m^2` and 50.28 Joule-sec

B

0.4 kg-m2 and 0.4 Joule-sec

C

50.28 kg-m2 and 0.4 Joule sec

D

0.4 kg-m2 and zero

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The correct Answer is:

A

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