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Penetration of solids in 3D Contact

Question asked by John Sutherland on Oct 21, 2010
Latest reply on Oct 24, 2010 by Ian Hogg

This camera recording shows a wheel rolling on a rail.  Other views show that it is tracking correctly.


Part way through the journey the wheel penetrates the rail and falls to the centre of the earth.


I don't know why, or what to do about it.