Loss of kinetic energy when an identical ring is placed on a rotating ring

1. A.
   $\frac{I\omega^{2}}{16}$
2. B.
   $\frac{I\omega^{2}}{8}$
3. C.
   $\frac{I\omega^{2}}{4}$
4. D.
   $\frac{I\omega^{2}}{2}$

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1. A.
   $I\omega^2$
2. B.
   $\dfrac{I\omega^2}{2}$
3. C.
   $\dfrac{I\omega^2}{4}$
4. D.
   $\dfrac{I\omega^2}{8}$

Tap an option to check your answer.