These statements are found in the Kane's method and Lagrange's method docs and are seemingly contradictory
"In mechanics we are assuming there are 5 basic sets of equations needed to describe a system." "In mechanics we are assuming there are 3 basic sets of equations needed to describe a system." I'm guessing some from the 5 sets can be rearranged to match the 3 sets? Also what does m represent in the 3 sets (on Lagrane's method page <http://docs.sympy.org/latest/modules/physics/mechanics/lagrange.html>). I'd guess mass but it is a function of the generalized coordinates and time and has a time derivative. Same basic question, what does k represent in the 5 sets (on Kane's method page <http://docs.sympy.org/latest/modules/physics/mechanics/kane.html>). I'm assuming that the f's are different types of forces on both pages. Thanks for the help, Brandon -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/2a75f232-74e8-48e2-8963-f2464aeacc93%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
