I appreciate the response after 8 years. This was the question of a young academic, which has since been solved, published, and laid to rest. However I would point people toward the wiki article on rotation matrices as opposed to orthogonality wrt to the relevance of the question...
The square is not rigid, I think that is the fact that is confusing me.
The points A,B,C,D are not pinned, they are fixed via some kind of joint (to represent a more complex joint). So A - D can fail given some moment or max force, and I want to analyze the system to ensure that those values...
Homework Statement
There isn't really a problem statement. This is for something I am myself designing but I'm struggling conceptually with the basic statics analysis. It's a simple square truss. If I were to write a problem statement it would be "What are the reaction forces at A and B?"
My...
:uhh:
Actually it was my mistake I typed in the numbers incorrectly.
[PLAIN]http://j.drhu.me/2011-02-03_1426.png
dot = 0 as well.
Annnnddd, I believe the matrix I was referring to as L .. is just my rotation matrix and I should be able to multiply it by a point, and get that point...
I feel I may have improperly posted this thread https://www.physicsforums.com/showthread.php?t=469331" but am just not as knowledgeable in my matrix math as I need to be. One (me) would think that somehow you should be able to get a rotation matrix from these two systems.
Homework Statement
So...
Hey everyone,
I'm working on my degree and have started getting into some deeper lin alg than I took previously regarding coordinate system transformations. I was hoping someone might be able to shed some light on it for me. I'll do my best to explain the problem ..
I have a global...