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Homework Help: Does phase speed = wave speed, for a wave on a string?

  1. Mar 21, 2010 #1
    1. The problem statement, all variables and given/known data
    A wave travels along a string. Its amplitude is 0.500 mm, its frequency is 300 Hz, and λ ‎= 0.10 m. μ = 0.01 kg/m.

    If I double the tension, but keep the wavelength the same, how would the amplitude and the phase speed of the wave change?

    2. Relevant equations
    v = sqrt (T / μ), where T is tension and v is wave speed

    v = λ‎f

    3. The attempt at a solution
    First off - is v in the above equations the same as phase speed!? I can't find any reference in my text to phase speed...

    If so calculating the change in phase speed would be easy, just sub the new values into the equations.

    But amplitude, I'm not sure. I have no equation for that!
  2. jcsd
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