In each situation shown in the figure below, a ball moves from point A to point B. For each case, find an algebraic expression for the change in potential energy in terms of the parameters given in the figure. You can assume that the radius of the ball is negligible. (Use any variable or symbol stated on each corresponding picture along with the following as necessary: g.) AUCase 1 = AUCase 2 AUCase 3 m m Case 1 -R m Case 2 m 2R Case 3