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Pressure increase

  1. Nov 14, 2008 #1
    1. The problem statement, all variables and given/known data
    Suppose that the build-up of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

    2. Relevant equations
    Poiseuille's equation

    3. The attempt at a solution
  2. jcsd
  3. Nov 15, 2008 #2


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  4. Dec 6, 2011 #3
    This was a while ago, but I hope someone can help me. I'm using continuity and get A1/A2 = 1.23, and using P = F/A, it looks like P1 = 1.23P2, which is a 23 percent increase. How do you get 52%? A little help? Thanks.
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