Recent content by Angelo Niforatos

Hi all, I am going to graduate school for Aerospace Engineering. I am a bit nervous because of the fact the my undergrad was in physics. I was wondering if anyone was in the same boat or a similar one that may have some good advice for me before I begin my next big chapter in my education!

Here is my full Kinetic Energy equation from the information I gave above... $$T = \frac{1}{2}I_{ring}\dot{\phi}^2 + \frac{1}{2r^2}I_{disk}(r^2\dot{\theta}^2 - 2rR\dot{\theta}^2 + R^2\dot{\theta}^2 + 2Rr\dot{\theta}\dot{\phi} - 2R^2\dot{\theta}\dot{\phi} + R^2\dot{\phi}^2) +...

I thought I did incorporate it in my equation for kinetic energy where my ##\dot{\alpha}^2## is ##\dot{\Psi}^2##, I just nevery expanded it out in my kinetic energy equation. I still end up with no Cosine terms in my Lagrangian except for the potential energy of the disk. I was able to get an...

[Mentor's note : No template as this thread was moved from the technical forums] Hi all! I am working on finding the Lagrangian for the situation stated in the title. This is actually a Wolfram Mathematica demonstration as well in which they give you the Lagrangian. I am working on re-deriving...