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Insane Electromagnetic Induction Question. Challenge your brains!

  1. Sep 21, 2009 #1
    Insane Electromagnetic Induction Question. Challenge your brains! :D

    3940806294_7df6b3337c_b.jpg



    F=BIL, F=mg




    There is a B field acting on the rod so we resolve that.
    I tried to resolve the other force vectors according to:
    1. Force acting on rod by gravity
    2. Force acting on rod by electromagnetic (F= BIL)

    but I can't seem to see the link between velocity and force??

    Thanks in advance guys :)
     
  2. jcsd
  3. Sep 21, 2009 #2
    Re: Insane Electromagnetic Induction Question. Challenge your brains! :D

    the electric force on wire is
    [tex]\frac{Blvcos\theta}{R}.Blcos\theta=\frac{(Blcos\theta)^2}{R}v[/tex]
    This force acts in opposite direction of the gravitational force.
     
  4. Sep 21, 2009 #3
    Re: Insane Electromagnetic Induction Question. Challenge your brains! :D

    Thanks, I got it :)
     
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