Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Bernoullis Equation?

  1. Aug 22, 2007 #1
    1. The problem statement, all variables and given/known data

    If wind blows at 35 m/s over a house, what is the net force on the roof if its area is 240m^2 and is flat?


    2. Relevant equations


    Bernoulli's equation.


    3. The attempt at a solution

    I have no idea how to belgin =|
     
  2. jcsd
  3. Aug 23, 2007 #2

    learningphysics

    User Avatar
    Homework Helper

    I think you can use dynamic pressure = [tex]\frac{density * velocity^2}{2}[/tex]

    Then use pressure = force/area.
     
  4. Aug 23, 2007 #3

    Doc Al

    User Avatar

    Staff: Mentor

    To find the net force on the roof, compare the reduced pressure of the moving outside air to the pressure of the air within the house.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook