1. Not finding help here? Sign up for a free 30min 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!

Pressure, force, and Area: Calculating the net Force Applied on A dam by Water

  1. Jan 17, 2009 #1
    1. The problem statement, all variables and given/known data
    Water stands at depth d behind a dam of width w . Find an expression for the net force of the water on the dam. Express your answer in terms of the variables w,d,p (density), and appropriate constants.


    2. Relevant equations
    P=F/A or pressure=Force/Area
    Hydrostatic pressure: p=p_0+pgd


    3. The attempt at a solution
    Fnet=P*A=(pgd)*A =pgd*w*d

    I guess that p_0 cancels out, because atmospheric pressure is felt both by the dam and the water. Does this make sense?
     
  2. jcsd
  3. Jan 17, 2009 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Careful. Is the pressure the same at every depth?

    That part makes sense.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Pressure, force, and Area: Calculating the net Force Applied on A dam by Water
Loading...