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QUESTION 2 a) A student constructs a simple pendulum by tying a bob of mass 50 g to the end of a 1 m long string. When the pendulum is in the position shown in Figure 2, the bob is released from rest. Neglect air resistance. i. Calculate the total mechanical energy of the pendulum bob at point A. ii. Find the speed of the bob when it reaches point B, the lowest point in the are using energy methods. iii. Calculate the height of the bob above the lowest point when its speed is 0.95 m/s using energy methods. iv. Does the mass and length used affect the maximum height that can be attained by the bob above the lowest point ? Explain. Inn_._. _