This article is exactly what I needed, I've been trying to understand the unification of Gravity, Inertia and Centrifugal force for years now, couldn't fathom it, now I can.

The best I can describe it is: "Matter is like water through a drain", I wrote a post with my consolation of how the three can be seen as one:

http://sentientmachine.blogspot.com/2013/05/matter-is-like-w...