Question

© W work is needed to change
, the time period of rotating body from
Ti to Tz, the moment of inertia of the body is​

Answer 1

We know that angular momentum of the body is given by

L= Iu

or L= I×2/r

or L=1/T

:- L1/L2=T2/T1

L/L2 = 2T/T(As, T2 = 2T)

so, Thus, on doubling the time period, angular momentum of body becomes half.