3. Kim rotates a rigid rod at constant speed. A 2.00 kg ball is attached to this rod by means of two ropes of negligible mass and a length of 2.00 m each. The situation is illustrated in the figure below. The two stretched strings and the rod form an equilateral triangle. If a tension of 30.0 N is measured in the bottom string, find the speed at which the ball is rotating. All four steps of the problem solving method are required.