Hi, Can someone please explain how to do this problem? I really dont understand. A ball is held at rest in position A as shown in the figure by 2 light cords. The horizontal cord is cut and the ball swings as a pendulum. What is the ratio of the tensions in the supporting cord, in position A, to that in position B? http://img445.imageshack.us/img445/3927/lomprobtensionvx9.png [Broken] thanks for your time.