Alan, Looks good, thanks. Yeah, Lagrange's method is the way to go on this problem, the reason I chose to do F=ma directly was purely because the problem is targeted towards a freshman audience and they won't be familiar with that approach at this point in their careers.
You are correct that the length of the pendulum is not needed if you want the displacement in the x or y directions (l cancels out). It is needed, however, if you want the amplitude of the angular displacements (see On Tue, Nov 15, 2011 at 4:32 PM, Alan Bromborsky <[email protected]> wrote: > On 11/15/2011 02:18 PM, Luke wrote: >> >> I found an error in my calculations, I have corrected it in the most >> recent commit on the github page. >> >> ~Luke >> > I added a section to your results using the Lagrangian method. The length > of the pendulum is not needed. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. > > -- "Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin, Historical Review of Pennsylvania, 1759 -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
