while porting this, and trying to grasp some of the math, especially to do with rotation results of collisions. There are things called 'gyroscopic' as variables, and they refer to the velocity of rotation and acceleration... is there any of the math in there for handling precession; or when applying a force to an axis of a rotating thing that the resulting force is 90 degrees offset from the input?

http://gyroscopes.org/1974lecture.asp

(specifically this area...)

http://www.gyros.biz/lecture/wmv/8.wmv

I don't really know what the math looks like; a good wikipedia article on the math would be nice to have Maybe it is there in bullet?

## Question about 'gryscopic' forces

### Re: Question about 'gryscopic' forces

For the gyroscopic force, I found this article:

http://www.real-world-physics-problems. ... ysics.html

It should also be in Bullet. Check out the example browser, there is an example on the gyroscopic force. From there you can trace back in the code where the gyroscopic force flags are used and you should find the terms.

http://www.real-world-physics-problems. ... ysics.html

It should also be in Bullet. Check out the example browser, there is an example on the gyroscopic force. From there you can trace back in the code where the gyroscopic force flags are used and you should find the terms.