Take from http://glscene.sourceforge.net/...
Physics in 3D applications is the next hot thing in the industry. There is no better time than now to get your feet wet with physics simulations because Dave Gravel has just released the beta version of his oxNewton library. This exiting library fully integrates with GLScene thus making physics simulation very easy indeed. OxNewton is based on the free to use Newton Dynamics library and provides physics functionality using the familiar VCL based Delphi way. Head on over and try this excellent GLScene library extension on Dave's web-site.