1. The problem statement, all variables and given/known data A ball on a string moves in a vertical circle of radius R at a constant speed with a centripetal acceleration a. At its lowest point, the ball is a negligible height above the ground. After several revolutions, the string breaks at the highest point in the motion. In terms of R, a, and g, find the horizontal displacement of the ball from the time the string breaks. 2. Relevant equations ac=v2/r 3. The attempt at a solution I found v = √acr but I don't know where to go from here.