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Attached gently to the opposite ends of a diameter of the ring, the ring will then rotate with an angular velocity:

1. ωM
2. ω(M + 2m)
3. ωM / (M − 2m)
4. ωM + 2m

Correct answer: ωM / (M − 2m)

Solution

The angular velocity of the ring changes due to the redistribution of mass. Using the principle of conservation of angular momentum, the new angular velocity is calculated as ωM / (M − 2m).

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