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Derive v = 2 l_nf_n for the nth harmonic

  1. Sep 9, 2012 #1
    1. The problem statement, all variables and given/known data
    Derive the expression v = lnfn where ln is the shortest distance between nodes for the nth harmonic.


    2. Relevant equations
    v = wave speed
    ln = shortest distance between nodes for the nthharmonic
    fn = frequency of the nth harmonic


    3. The attempt at a solution

    Is it asking me to take the derivative of the wave speed, which I believe would give me the acceleration of the wave?

    So,

    wave acceleration = 2*ln

    Am I making any sense?
     
  2. jcsd
  3. Sep 10, 2012 #2

    rl.bhat

    User Avatar
    Homework Helper

    nth harmonics of fo is n times fo. Similarly ln is equal to (lambda)o/2n.
    Now proceed.
     
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