Thank you very much, using this I could find both \theta ' and \theta ''.
I now think I understand this problem:
1) Find the radius correlation using the law of cosines.
2) Find the angle correlation using the fact that the triangle is isosceles.
But I still can't nail the first part...
Starting out with the laws of cosines I think seems very good, if I could make it work. This is what I tried (I have looked over it a couple of times for errors, but I can't find anything apparent.):
r = \sqrt{2*0.15^{2}-0.15^{2}*cos(\beta)}
r' = \frac{0.15^{2}*sin(\beta)*\beta...
Homework Statement
The problem and answers are given in full through the following image:
http://ekdhl.net/files/mechanics.JPGHomework Equations
Equations 2/13 and 2/14 are these:
\textbf{v} = r'e_{r} + r\theta 'e_{\theta}
\textbf{a} = (r''-r\theta '^{2})e_{r} + (\theta ''r + 2r'\theta...