Difference between revisions of "CM Course Notes"

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==Gallery==
 
==Gallery==
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'''Lecture Notes'''
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[http://www.pa.ucla.edu/sites/default/files/files/dhoker%20lecture%20notes/classical_mechanics.pdf Classical Mechanics] by Prof. Eric D'Hoker<ref>http://www.pa.ucla.edu/content/eric-dhoker-lecture-notes, retrieved 17th April 2014. </ref>. 
  
 
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Revision as of 01:04, 18 April 2014

Here is a conglomerate of notes gathered for the graduate CM class.


Contents

220 Notes

Lagrangian Mechanics

Method for finding normal modes of system

Since we expect oscillatory motion of a normal mode (where ω is the same for both masses), we try: \[ x_1(t) = A_1 e^{i \omega t} \\ x_2(t) = A_2 e^{i \omega t} \]

Euler-Lagrange Equation of system without constraints:

\[\frac{\mathrm{d}}{\mathrm{d}t} \left ( \frac {\partial L}{\partial \dot{q}_j} \right ) = \frac {\partial L}{\partial q_j} \]

Hamiltonian Mechanics

Hamiltonian i.t.o. Lagrangian:

\[H = \dot{\mathbf{q}} \frac{\partial \mathcal{L}}{\partial \dot{\mathbf{q}}} - \mathcal{L} \]

Transform from rotating to fixed frame:

\[ \vec{v}' = \vec{v} - \vec{\omega} \times \vec{r} \]

Relativity

Write the product $\gamma\beta$ in terms of only $\gamma$:

\[\gamma \beta = \sqrt{\frac{\beta^2}{1- \beta^2}}= \sqrt{\frac{A}{1-\beta^2} + B} \\ \text{In the words of the notorious J.D. Jackson, ''we see'' that }A = 1 \text{ and }B = -1 \text{ , such that } \\ \gamma \beta = \sqrt{\frac{1}{1-\beta^2} - 1}=\sqrt{\gamma^2 - 1} \] E.g.: Lim#3021

Exercises

General Identities


Gallery

Lecture Notes

Classical Mechanics by Prof. Eric D'Hoker[1].


References

  1. http://www.pa.ucla.edu/content/eric-dhoker-lecture-notes, retrieved 17th April 2014.
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