Recent content by Ioannis1404

  1. Ioannis1404

    Graduate Find Euler-Lagrange Equations w/Given Init Pos & Vel

    Thanks vanhees71 for this informative comment but it seems to me that it is completely unrelated to my initial question. However, I am very new in this forum and perhaps I did not understand yet the way the questions and provided answers are handled.
  2. Ioannis1404

    Graduate Find Euler-Lagrange Equations w/Given Init Pos & Vel

    Thanks again, however I think I found a paper by Chad R. Galley who, seems to me, raise a similar question as mine. I copy from the abstract '... Hamilton's principle has a subtle pitfall that often goes unnoticed in physics: it is formulated as a boundary value problem in time but is used to...
  3. Ioannis1404

    Graduate Find Euler-Lagrange Equations w/Given Init Pos & Vel

    Thank you for your answer. Well, perhaps I did not make clear what I am trying to understand. What seems a contradiction to me is the following. We derive the Euler-Lagrange equations by minimising the action assuming the initial and final positions are known. But then we solve the...
  4. Ioannis1404

    Graduate Find Euler-Lagrange Equations w/Given Init Pos & Vel

    In classical mechanics to establish the Euler-Lagrange equations of motion of a particle we "minimize" the action, that is the integral of the Lagrangian, prescribing as the integral limits the initial and final positions of the particle. Usually, for a problem in mechanics we do not know the...
  5. Ioannis1404

    What is Ioannis1404's background in mechanics of materials and related theories?

    Former researcher in the field of mechanics of materials with additional interest in Newtonian and Lagrangian mechanics as well as tensor calculus and theory of relativity