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String tension, is this the correct formula?

  1. Feb 26, 2004 #1
    I read in a book that tension = 1/(pa'), where a' = alpha prime.

    Is this the correct formula for string tension and if so what is p?
  2. jcsd
  3. Feb 26, 2004 #2
    in my book, it is


    [itex]\pi[/itex] is the ratio of the circumference of a circle to its diameter, approximately 3.14. and if your source differs by a factor of 2 from mine, i wouldn't worry about it.
  4. Feb 26, 2004 #3
    ah, p must be pi then, would that make sense for a closed string then?
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