(adsbygoogle = window.adsbygoogle || []).push({}); 1. A banjo string 36.0 cm long oscillates in a standing wave pattern. It resonates in its

fundamental mode at a frequency of 250 Hz. What is the tension in the string if 80.0 cm of the

string has a mass of 0.75 grams?

2. Relevant equations

k=2pi/lamda

velocity=sqrt(F_tension/miu)

miu=m/l

w=2pif

3. The attempt at a solution

v=sqrt(F_t/miu)

solved for miu and plugged into equation: 7.5*10^-4/.8

v=lamdaf

L=lamda/2

--> v=2Lf

v=2(.8)(250)

then equated both equations

i think i got confused with which length to use

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# Homework Help: Standing waves and banjo string

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