The system is at rest with the spring unstretched when θ = 0. the 3.2-kg uniform slender bar is then given a slight clockwise nudge. the value of b is 0.46 m. (a) if the bar comes to momentary rest when θ = 57°, determine the spring constant k. (b) for the value k = 39 n/m, find the magnitude of the angular velocity of the bar when θ = 34°.

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.