Each of the two elastic rubber bands of the slingshot has an unstretched length l. If they are pulled back to the position shown and released from rest, determine the maximum height the pellet of mass M will reach if it is fired vertically upward. Neglect the mass of the rubber bands and the change in elevation of the pellet while it is constrained by the rubber bands. Each rubber band has a stiffness k.

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Given: 1 = 200 mm M = 25 gm a = 240 mm b = 50 mm k = 50 N m