PHY 1010U Lecture Notes - Lecture 7: Net Force, Curve, Circular Motion
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Example: attached to the outer radius of a 1. 0 m diameter wheel is a ball, see figure. The wheel can rotate around its horizontal axis. It starts rotating from rest when it is level with the axle, at position a. The ball is released at position b also level with the axle. What is the minimum angular acceleration of the wheel that allows the ball to hit the ceiling, which is 2. 0 m above b. Uniform circular motion is a special case of nonuniform circular motion, In which the particle moves in a circle with constant speed v, hence constant angular speed = v / r. hence both (=d /dt) = 0 and at = r = 0. Hence there is only centripetal acceleration ar = v2/r. The kinematic equation describing uniform circular motion is: uniform circular motion. The period and the frequency in uniform circular motion:
