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Motional EMF

  1. Apr 17, 2016 #1
    1. The problem statement, all variables and given/known data
    upload_2016-4-17_19-1-20.png

    2. Relevant equations
    upload_2016-4-17_19-1-38.png

    3. The attempt at a solution

    Kinetic Energy + Potential energy=0

    1/2mv^2 = mgcos(20)
    100v^2 = 1.96cos(20)
    v^2 = .0184
    v = .136 m/s

    No idea if this is correct or if I should proceed with energy considerations. Please advise.
     
  2. jcsd
  3. Apr 19, 2016 #2

    robphy

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    Science Advisor
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    Gold Member

    Under the influence of gravity and the normal force of the incline, the resulting motion is not at constant velocity. Right?

    There must be an additional force somewhere to balance the forces.
    So, you are missing something.
    Is there anything else given in the problem that can be used?
     
  4. Apr 19, 2016 #3
    Thanks for the response. I got help in class last night!
     
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