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Homework Help: Wave speed, tension, linear density

  1. Jan 6, 2010 #1
    1. The problem statement, all variables and given/known data
    The wave speed on a string is 155 m/s when the tension is 84.0 N.
    What tension will give a speed of 182 m/s?

    2. Relevant equations

    velocity= Squareroot(tension/linear density)
    linear density = mass/length

    3. The attempt at a solution

    Well, what I did was assuming that i just plug in the numbers my linear density would be 0.0035, my initial tension of 84 netted 155 m/s, I plugged this same number in to find the tension with speed of 182 m/s and my answer was 115.934 after some manipulation of numbers, if this is correct is this answer already in N (newtons).
  2. jcsd
  3. Jan 7, 2010 #2
    As you solve for tension without manipulating the equations the answer is naturally in N.
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