Saturday, December 31, 2016

lagrangian formalism - Hamilton's Principle


Hamilton's principle states that a dynamic system always follows a path such that its action integral is stationary (that is, maximum or minimum).


Why should the action integral be stationary? On what basis did Hamilton state this principle?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...