Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A thin circular rod is supported in a vertical plane by a bracket at A. Attached to the bracket and loosely wound around the rod is a spring of constant k=3lb/ft and undeformed length equal to the arc of circle AB. An 8-oz collar C, not attached to the spring, can slide without friction along the rod. Assume that the collar is released from rest at an angle (in degrees) with the vertical. Determine the smallest value of for which the collar will pass through D and reach point A. (You must provide an answer before moving on to the next part.) The smallest value of for which the collar will pass through D and reach Point A is