A thin ring of mass 5 kg and diameter 20 cm is rotating about its axis at 4200 rpm. Find its angular momentum (in kgm2/s)?

A thin ring of mass 5 kg and diameter 20 cm is rotating about its axis

1.	A thin ring of mass 5 kg and diameter 20 cm is rotating about its axis at 4200 rpm. Find its angular momentum (in kgm2/s)?
A.	44
B.	11
C.	22
D.	33
Answer» D. 33

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A thin ring of mass 5 kg and diameter 20 cm is rotating about its axis at 4200 rpm. Find its angular momentum (in kgm2/s)?

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