Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Standing waves

  1. Apr 21, 2008 #1
    Question: On a piano, middle C's 260 Hz. What mass is needed then to suspend from a hanger for resonance at 260 Hz for your string (in the absence of a tuning fork)? Is this sensible?

    Given:
    mstring = 0.0003 kg
    Lstring = 1.809 m (entire length of string)
    L = 1.370 m (length between fixed points)

    And:
    f = (n/2L)*sqrt((mhanger*g)/(mstring/Lstring)

    I'm unsure what n to use. In the given experiment we used a tuning fork and changed the mass at the end of the hanger to vary tension and n (harmonic). But how does the absence of a tuning fork affect this??? Will there be only one possible harmonic to produce resonance or what?
     
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted