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Homework Help: Finding the Magnitude of Normal Force

  1. Mar 12, 2010 #1
    A motorcycle has a constant speed of 30.0 m/s as it passes over the top of a hill whose radius of curvature is 134 m. The mass of the motorcycle and driver is 333 kg.

    a)Find the magnitude of the centripetal force that acts on the cycle.
    (I found the Centripetal force by Fc=mv^2/r which is 2236.6N)

    b)Find the magnitude of the normal force that acts on the cycle.
    ( I thought they are asking for F=ma for this which is wrong..... any help?,)
     
  2. jcsd
  3. Mar 12, 2010 #2
    Rather draw a free body diagram. The centripetal force you found is the net force.
     
  4. Mar 12, 2010 #3
    So N = mg
     
  5. Mar 12, 2010 #4
    How do you draw a free body diagram? List all the forces along their directions.
    Then apply
    Fnet = m*acc.
     
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