This project has moved. For the latest updates, please go here.

Unknown Forces

Topics: User Forum
Feb 11, 2008 at 9:28 PM
I'm trying to make a simple box with a ball that bounces perfectly. Essentially, a perpetual motion thing. The gravity is 0 and the FrictionCoefficient for all geometries is 0 and RestitutionCoefficient is 1.

However, the ball still slows down noticeably. Are there some other forces that I have to set to ensure continuous motion?
Feb 12, 2008 at 12:41 AM
Set Body.LinearDragCoeficient = 0. Think of linear drag as air drag.
Feb 12, 2008 at 4:00 PM
Is there an AngularDragCoeffecient? If so, that should be 0 as well so energy isn't lost when it begin to spin.
Feb 12, 2008 at 4:50 PM
That did it. Thanks.

I couldn't find any angular drag references in the code.
Feb 12, 2008 at 7:09 PM
I think it's called RotationalDragCoeficient or something close to that. Its a property of the Body object.