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 and swings to position 2, where θ = 40°.

(a) Use conservation of energy to determine the magnitude of the ball’s velocity at position 2.

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(b) Draw graphs of the kinetic energy, the potential energy, and the total energy for values of θ from zero to 180°.