long and has a mass of 198 kg. The rotor is rotating at 384 rev/min. (a) What is the rotational inertia of the rotor assembly about the axis of

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long and has a mass of 198 kg. The rotor is rotating at 384 rev/min. (a) What is the rotational inertia of the rotor assembly about the axis of rotation? (Each blade can be considered to be a thin rod rotated about one end.) (b) What is the total kinetic energy of rotation?