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Help with biot savard thing

  1. May 1, 2009 #1
    1. The problem statement, all variables and given/known data

    ok i have a lab w a magnetic balance (where u have weight on one side and electrical magnetism on the other) and its using a law :

    F=(u x i2 x l)/(2 x (pi) x d)

    were i is intensity, l is lenght of hte conductors, separated by a distance d, u is 4π×10-7 kg·m·A-2·s-2

    this is a derivative of biot savart law

    now they are asking me to transform the formula to have I2/m (m is mass

    how do i do this?

    oh and my data is

    1 lenght of string is 5cm long and has a volumic mass of 0.14567 g/m

    # of 5 cm lenghts / i
    1 2.48
    2 4.39
    3 4.92
    4 5.66
    5 5.88
    6 6.81
    7 7.41
    8 7.87

    2. Relevant equations

    F=(u x i2 x l)/(2 x (pi) x d)

    3. The attempt at a solution

    no idea
     
    Last edited: May 1, 2009
  2. jcsd
  3. May 1, 2009 #2
    ? anyone?..
     
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