How would I approach animating the rope on a pull switch?

[rajbirjohar]

I'm trying to recreate a pull switch like on a lamp. I was able to successfully build out the ball with the drag events and drag animations but now I'm stuck on animating a rope or a line with one end anchored to the ball and one anchored to something else. Along with that, it would be nice if the rope had some sort of physics when it came to swinging due to how the ball is pulled back to it's original state.