In Fig. 8-38, the string is L 120 cm long, has a ball attached to one end, and is fixed
Chapter 8, Problem 70(choose chapter or problem)
In Fig. 8-38, the string is L 120 cm long, has a ball attached to one end, and is fixed at its other end. A fixed peg is at point P. Released from rest, the ball swings down until the string catches on the peg; then the ball swings up, around the peg. If the ball is to swing completely around the peg, what value must distance d exceed? (Hint: The ball must still be moving at the top of its swing. Do you see why?)
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