See that coin. Just need to do a story on a real flat world the implications are fun SCIFI Network here I come. Do you really just fall off the edge of the world or does gravity pull you around to the other side of the “coin”?
There probably is a not-too-difficult physics formula to calculate the gravitational field of a disc. I tried the following but couldn’t figure it out. I’m sure there are more simple and direct ways of determining the gravitational dynamics of a disc.
Gravitational field of a disc:
http://www.physicsforums.com/showthread.php?t=39461