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Problem with Mordern Physic

  1. Aug 21, 2013 #1
    1. The problem statement, all variables and given/known data

    Consider a bar of length as measured in frame S. Show that the bar has the same length in
    frame S’, that is, show that lengths are invariant under Galilean transformations.

    2. Relevant equations
    x'=x-vt


    3. The attempt at a solution

    I know that t'=t
    y'=y
    z'=z
    so

    x'=x-vt


    The problem is that i dont understant how to make it valit with the equation, i undestant that the space from th point of view of S' dilates and is not invariant .
     
  2. jcsd
  3. Aug 21, 2013 #2
    skip to 12:40 on this video
     
    Last edited by a moderator: Sep 25, 2014
  4. Aug 21, 2013 #3
    Yep but how i show that the leght in that equation is invariant in galilean tranformation
     
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