Question

A ball of mass m-3.50 kg is attached to a horizontal massless cord of length l- 2.00 m, and the other end is fixed, as shown. The ball is released from rest from the highest point, A. Peg a. b. What is the speed of the ball when it reaches its lowest point, B? How much work is done by gravity as the ball moves from point A to point B, its lowest point? c. How much work is done by tension as the ball moves from A to B? d. A peg is positioned a distance h 1.50 m below the fixed end of the cord. After hitting the peg, the ball follows a smaller circular path, as shown. What is the speed of the ball when it reaches the top of its new circular path, point C?

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