Newton’s second law for rotational motion
A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate in a horizontal circle. Because of air resistance and to keep the ball moving at constant speed, a continual push must be exerted on the stick, causing a 0.036-N . m torque. Determine the magnitude of the resistive force that the air exerts on the ball opposing its motion. What assumptions did you make?
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