1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wave speed and distance on a guitar string

  1. Apr 22, 2010 #1
    1. The problem statement, all variables and given/known data
    The wave speed in a guitar string of length 62.9 cm is 278 m/s. you pluck the center of the string by pulling it up and letting go. Pulses move in both directions and are reflected off the ends of the string. If you plucked the string 25.1 cm from the left end of the string, how far from the other end of the string would the two pulses meet? In units of cm.


    2. Relevant equations
    I thought just some old-fashioned algebra could do it..


    3. The attempt at a solution
    What I first tried was 25.1 cm + x= Remainingcm-x, so:

    25.1cm+x=(62.9-25.1)-x
    25.1cm+x=37.8-x
    2x=12.7
    x=6.35 cm

    However, this did not work.

    Can anyone tell me what I'm doing wrong? Thanks.
     
  2. jcsd
  3. Apr 23, 2010 #2
    Waves meet at P a distance x from B
    stringwave.png

    Just be careful setting up the equation.
    Measure x from the right hand side as the question asks and you can't go wrong.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Wave speed and distance on a guitar string
Loading...