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!

Force acting on area

  1. Mar 15, 2016 #1
    1. The problem statement, all variables and given/known data
    dA lies on x and y aixs , right ? the author gave that the volume flow rate thru element A is ucos(theta)dA , why not
    usin(theta)dA ? if u ' = ucos(theta) , it will become parallel to dA , right ? since u' will be parallel to x-axis.....
    2. Relevant equations


    3. The attempt at a solution
     

    Attached Files:

    • 20..PNG
      20..PNG
      File size:
      12 KB
      Views:
      30
    • 21.PNG
      21.PNG
      File size:
      5 KB
      Views:
      25
  2. jcsd
  3. Mar 15, 2016 #2

    BvU

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    dA is in the yz plane
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Force acting on area
Loading...