The mass of the ball is m = 2 kg and the string’s length is L = 1 m. The ball is released...

The mass of the ball is m = 2 kg and the string’s length is L = 1 m. The ball is released from rest in position 1. When the string is vertical, it hits the fixed peg shown.

(a) Use conservation of energy to determine the minimum angle θ necessary for the ball to swing to position 2.

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(b) If the ball is released at the minimum angle θ determined in part (a), what is the tension in the string just before and just after it hits the peg?