All Questions
Tagged with equations-of-motion action
3 questions
2
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Noether’s second theorem: about the action principle
Noether's second theorem is supposed to show that the invariance of the Lagrangian by the Lie group (infinite in dimension) of certain theories necessarily implies that the field equations proper to ...
- 121
3
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1
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Equality modulo equations of motion [closed]
What does Qmechanic mean by “equality modulo equations of motion” when talking about Lagrangian formulation/formalism and so on?
- 71
0
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1
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Physical significance of omitting a purely time dependent term from a Lagrangian
For a simple pendulum whose point of support moves on a vertical circle of radius $a$ with constant frequency $\gamma$, you can write the Lagrangian down. The potential energy can be written as $-mg(-...
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