1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Relativity nightmare

  1. Oct 29, 2009 #1

    lom

    User Avatar

    http://i37.tinypic.com/avpjsh.jpg

    i cant understand the graph.

    i know that its time and x axes graph

    but i can imagine the pole moving
    or the barn moving to the runner

    all i see is some lines

    the part when the barn moving to the runner is the hardest graph

    i dont know what happening there
     
  2. jcsd
  3. Nov 1, 2009 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi lom! :smile:

    it's like two trains on adjacent track …

    you're on one train, looking at the other, and you can't tell which train is moving.

    Here, the barn is one train, and the runner is the other train.

    You can regard the runner as stationary, and in that case the barn must be moving.

    Since they're getting closer (well, until he gets inside! :rolleyes:), that means the barn must be moving backwards. :smile:

    (and world-lines always slope towards the direction of motion)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Relativity nightmare
  1. Commutator relations (Replies: 3)

  2. Commutator relations (Replies: 1)

  3. Relativity Problem (Replies: 11)

Loading...