VBGamer

There is a physics demo by Andy Owen in the [url="http://vbgamer.strategon.com/files"]Files[/url] section here at VBGamer. It demonstrates 2D ridged bodies interacting in a real time simulation. The mouse can be use to interact with the bouncing particles to repulse or attract them with varying degrees of influence. The code has very detailed comments as well. Go check it out!