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!

Difference between Centroid and Centre of Pressue

  1. Sep 28, 2015 #1


    User Avatar

    1. The problem statement, all variables and given/known data
    What is the difference between the Centre of Pressure and Centroid

    2. Relevant equations

    3. The attempt at a solution
    My understanding is that the centre of pressure acts on a centroid. So, how come they can be on different positions for a submerged surface?
  2. jcsd
  3. Sep 28, 2015 #2


    User Avatar
    Homework Helper

    If pressure is applied evenly to a flat surface, then the center of pressure is the centroid. If a submerged surface is at an angle, then the pressure is not constant across the surface.
  4. Sep 29, 2015 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Even if the submerged surface is perfectly vertical, the centroid and the c.p. don't coincide because of the pressure gradient due to Pascal's Law where P = ρgh.
  5. Sep 30, 2015 #4


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Likely RUber meant at an angle to the horizontal, which would include 90 degrees.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted