A body having moment of inertia o:m2 is rotating at 210 RPM and r with another b

Question

A body having moment of inertia o:m2 is rotating at 210 RPM and r with another body at rest having I 40 kg m2. The resultant speed after ing will be

Options:

A . 90 RPM

B . 100 RPM

C . 80 RPM

D . data are insufficient

Answer: Option A

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