A flywheel rotating about a fixed axis has a kinetic energy of 360J when its angular speed is 30rads−1. The moment of inertia of the wheel about the axis rotation is:
A
0.6kgm2
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B
0.15kgm2
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C
0.8kgm2
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D
0.75kgm2
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Solution
The correct option is C0.8kgm2 Given : Angular speed of the flywheel w=30rad/s