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An airplane propeller is 2.08 m in length (from tip to tip)with mass 117 kg. The propeller is rotating at 2400 rev/min aboutan axis through its center.

1. What is its rotational kinetic energy? Treat the propelleras a slender rod.

2. If it were not rotating, how far would it have to drop infree fall to acquire the same kinetic energy?

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