A girl swings back and forth on a swing with ropes that are 4.00 m long. The

Question:

A girl swings back and forth on a swing with ropes that are 4.00 m long. The maximum height she reaches is 2.00 m above the ground. At the lowest point of the swing, she is 0.500 m above the ground.
(a) The girl attains the maximum speed (1) at the top, (2) in the middle, (3) at the bottom of the swing. Why?
(b) What is the girl’s maximum speed?