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1. A ball is revolving horizontally in a circle of radius 1.8 m, and is held by a rigid massless rod. The mass of the ball is 0.1 kg. The ball has a constant linear speed of 27 m/s. What is the angular velocity of the orbit in rad/s? a. 15 b. 2.3 c. 0.6 d. 5.4 e. 0.1
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