I = me.inertia(A, iXX….) gives the inertia in the (normally) body - fixed frame A Body = Me.RigidBody( ‚Body‘, mass center, frame, mass, ( I, P))
My question: Does RigidBody ‚assume‘, that mass center = P ? Reason behind my question: For regular homogenious bodies, iXX, IYY, etc are often known relative to the geometric center of the body. If the mass center is not equal to the geometric center of the body, would RigidBody know, that the inertia is relative to the geometric center? In my program, the kinetic energy comes out right, if I set mass center = geometric center, but incorrect if I do not. Therefore, I wonder, whether there is a mistake in my program, or whether RigidBody assumes that P = mass center. Thanks a lot for any help! -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/0d3101eb-1fe7-4c24-a125-bab8c8a58145n%40googlegroups.com.
