[Pyode-user] effect of start time on ode physics

[chris <dra...@gm...>]

Hi,

I have been doing some experiments as part of my phd and, tho the
theory predicts some differences in physics results, it was still
surprising to see it in actuality. the following differ only in the
start time (the second has a start time of 8000), but the final
resting place of the RH block is quite different from its position
when running the first example, even tho the spatial positions, size
of everything, duration of sim and grav constant are the same.

http://www.planet-earth.org/pyode/preciseBlocks.py
http://www.planet-earth.org/pyode/preciseBlocksTime8000.py

Can anyone explain to me what is happening inside ode to produce these
different results? I can explain the results abstractly, but not in
detailed terms relating to the specifics of pyode.

thanks,

chris