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2. One end of a light spring of natural length d and spring constant k = mg/d is fixed on a rigid support and the other end is fixed to a smooth ring of mass M which can slide without friction on a vertical rod fixed at a distance d from the support . Initially ,the spring makes an angle of 37 degree with the horizontal as shown in figure . The system is released from rest . What will beThe speed of the ring at the same angle subtended downward.

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