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Motional emf

  1. Oct 13, 2011 #1
    1. The problem statement, all variables and given/known data
    Here is the picture:
    yessss.jpg
    I have an upcoming test, and I cannot seem to get any questions like this one. Help is greatly appreciated.


    I calculated the net force, such that Fnet=ma. There exists a magnetic force due to the current in the wire. The mass m is negligible, ie 0kg. Also, assume the only resistence is R1 and E=36V. M=2kg, and B is directed into the page at 0.7T. Also, d=0.8m. Thus,


    Fb-Mg=ma
    ILB-Mg=ma
    (36A)(0.8m)(0.7T)-(2kg)(9.81N/kg)=ma
    0.54N=ma

    Hence, there is an acceleration to the right.

    From here I go absolutely blank. I have spent a lot of hours on these types of questions but I cannot comprehend them. Can someone please give me a hand.
     
  2. jcsd
  3. Oct 13, 2011 #2

    Redbelly98

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    What is the actual question? Please include the complete problem statement.
     
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