Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'complicated differential equation needs help!' topicStudent Support Forum > General > "complicated differential equation needs help!"

Next Comment >Help | Reply To Topic
Author Comment/Response
Christian
11/29/11 2:47pm

Hello

Im new to mathematica and I'm having some problems with a system of differential equations.

I am trying to describe a double pendulum by two 2nd order differential equations, q1'' and q2'', but I don't seem to get the same solution as other people.

I've attached my try, and below are two links with the solution, I can't seem to get.

http://cas.umkc.edu/physics/sps/projects/doublependulum/Pendulum.pdf
http://myphysicslab.com/dbl_pendulum.html

Note: I'm not talking about solving the differential equations, I'm just talking about "isolating" q1'' and q2''.

Lastly, sorry for my bad english.

Attachment: double pendulum tried solution.nb, URL: ,

Subject (listing for 'complicated differential equation needs help!')
Author Date Posted
complicated differential equation needs help! Christian 11/29/11 2:47pm
Re: complicated differential equation needs help! Quinn McKinsey 11/30/11 11:35am
Next Comment >Help | Reply To Topic