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°.