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A ring of radius 0.5 m 0.5\text{ m} 0.5mand mass 10 kg 10\text{ kg} 10kgis rotating about its diameter with an angular velocity of 20 rad/s . 20\text{ rad/s}. 20rad/s.Its kinetic energy is __________ . \text{\_\_\_\_\_\_\_\_\_\_}. __________.
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