A body having moment of inertia of 30 kg m^2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m^2. The resultant speed after meshing will be

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A body having moment of inertia of 30 kg m^2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m^2. The resultant speed after meshing will be

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Greg · Answer 1 · 2022-10-17T13:26:27+0000

Right option is (a) 90 RPM

To elaborate: Since moment is conserved, there fore,

30 x 210 = 40 x Resultant speed

or, Resultant speed = 90 RPM.

A body having moment of inertia of 30 kg m^2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m^2. The resultant speed after meshing will be

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