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Lagrangian systems

  1. Jan 26, 2010 #1
    i have been studying on lagrangian dynamics. and got stuck at some point. normally on the systems that include mass and coils, i can do the calculations correct but when dampers go into the equation too i don't know what to do. do i just add them into equation like coils?

    for example the problem below. could someone give me a quick recap on steps i should follow.

    [URL [Broken]
    [PLAIN]http://img163.imageshack.us/img163/3401/soru2.jpg [Broken] [Broken][/URL]

    [PLAIN]http://img163.imageshack.us/img163/3401/soru2.jpg [Broken] [Broken]

    if there was no external force, and no dampers in the problem. i would do

    L=T-V , calculate T and V and take derivative of the equation on generalized coordinates and make it equal to zero. since there are dampers in the problem. am i just supposed to add those into V, and make the final equation, equal to f(t)?

    it would be really helpful if you could help fast, got exam in 2hours.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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