A rotating flywheel can be used as a method to store energy. If it is required that such a device be able to store up to a maximum of 2.00 * 106 J when rotating at 400 rad/s, what moment of inertia is required?
A) 50 kg 
M2
B) 25 kg 
M2
C) 12.5 kg 
M2
D) 6.3 kg 
M2
Correct Answer:
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