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!

Force exerted by water in a U-shaped tube

  1. Aug 27, 2011 #1
    1. The problem statement, all variables and given/known data
    In a U-shaped tube, water is flowing with velocity v. The flowing rate is u, and it's constant. What force does the water exert on the wall of the tube.


    2. Relevant equations

    F = dp/dt

    u = m/t

    3. The attempt at a solution
    The change in momentum is
    [itex] mv - (-mv)[/itex]

    or

    [itex] 2uv \Delta t[/itex]

    so

    [itex] F = 2uv[/itex]

    is this correct?
     
    Last edited: Aug 27, 2011
  2. jcsd
  3. Aug 27, 2011 #2

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Yes, that's correct.
     
  4. Aug 27, 2011 #3
    Thanks a lot !:biggrin:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Force exerted by water in a U-shaped tube
Loading...