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A fly wheel rotating about fixed axis has a kinetic energy of 360 joule when its angular speed is 30 radian/sec.

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A fly wheel rotating about fixed axis has a kinetic energy of 360 joule when its angular speed is 30 radian/sec. The moment of inertia of the wheel about the axis of rotation is

(a) 0.6 kgm2

(b) 0.15 kgm2

(c) 0.8 kgm2

(d) 0.75 kgm2

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Correct option (c) 0.8 kgm2

Explanation:

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