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Waves in a string

  • Thread starter Ry122
  • Start date
  • #1
565
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a third harmonic of a 50g guitar string oscillates at a frequency of 1280hz. the wavelength is 30cm
determine the tension in the string and the string length.

my attempt:
the 3rd harmonic of a guitar string is 3/2 times the wavelength so the length of the string is 45cm.
so mass per unit length is .05/.45=.111kg/m
v=f(lambda)
so v =384ms^1
V=sqrt(T/mu)
so 384=sqrt(T/.111)
T therefore is =16367.616N
isnt this value for tension too large to be correct?
where am i going wrong?
 

Answers and Replies

  • #2
181
0
I can't spot an error, the original question sounds plausible
and yet this tension is ridiculously high.
50g sounds a bit heavy, but even so...
 
Last edited:

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