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Classical Dynamics
A Contemporary Approach
by Jorge V. José and Eugene Saletan
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Chapter Three:
Topics in Lagrangian Dynamics
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The Variational principle and Lagrange's
equations
- 1. derivation: the action, Hamilton's principle,
discussion
- 2. inclusion of constraints
Symmetry and conservation
- 1. cyclic coordinates: invariant submanifolds
and conservation of momentum, transformations, passive and active,
three examples
- 2. Noether's theorem: point transformations,
the theorem
Nonpotential forces
- 1. dissipative forces in the Lagrangian
formalism: rewriting the EL equations, the dissipative and Rayleigh
functions
- 2. the damped harmonic oscillator
- 3. comment on time-dependent forces
A digression on geometry
- 1. some geometry: vector fields, one-forms,
the Lie derivative
- 2. the Euler-Lagrange equations
- 3. Noether's theorem: one-parameter groups,
the theorem
Problems
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