1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wind force, drag, something :v

  1. Jun 30, 2012 #1


    User Avatar

    Heyy uh I have this problem I'm confused about; there is a body at rest (a sheet of cardboard set at an angle to electronic scales) and a fan blowing at the surface area. There is noticeable difference when I adjust the speed of the fan, the angle it sits at and the distance to the fan. Anyway I need help with the wind force equations, if I have the right equations.

    These are the ones I have:
    (Wind force) F= A* P* Cd [A: area of item, P: wind pressure, Cd: drag coefficient <- Huh??]
    (Wind pressure) (1/2)*(density of air)*(wind speed)^2*(Shape factor)

    Can somebody explain what the constants are and how to work them out, I would prefer if the responses are explanations not just links that are going to confuse me further

    Any help will do :)
  2. jcsd
  3. Jun 30, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook