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Q. A rotating cylinder about 12.00 km in length and 8.00 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the same acceleration because of gravity on Earth?

Q. The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?

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