The angular speed of a body changes from ω1 to ω2 without applying a – InterviewSolution

1.

The angular speed of a body changes from ω1 to ω2 without applying a torque but due to change in M.I. Find the ratio of the radii of gyration in the two cases.

Answer»

We know that

I₁ω₁ = I₂ω₂

or \(mk^2_1ω_1=mk^2_2w_2\)

or \((\frac{k_1}{k_2})^2=\frac{ω_2}{ω_1}\)

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