A ball is fixed to the end of a string, which is attached to the ceiling at point P. As the drawing shows, the ball is projected downward at A with the launch speed υ₀. Traveling on a circular path, the ball comes to a halt at point B. What enables the ball to reach point B, which is above point A? Ignore friction and air resistance.

(a) The work done by the tension in the string

(b) The ball’s initial gravitational potential energy

(c) The ball’s initial kinetic energy

(d) The work done by the gravitational force

Transcribed Image Text:

B'