Q1. At time a grinding wheel has an angular velocity of 22.0. It has a constant angular acceleration of 33.0 until a circuit breaker trips at time = 2.20. From then on, the wheel turns through an angle of 431 as it coasts to a stop at constant angular deceleration.
Q2. A 79g, 40-{rm cm}-long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 11g ball of clay travelling horizontally at 2.5m/s hits and sticks to the very bottom tip of the rod. To what maximum angle, measured from vertical, does rod (with the attached ball of clay) rotate?