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 acting on pipe

  1. Mar 22, 2016 #1
    1. The problem statement, all variables and given/known data
    why the author gave the change in velocity as (25- 25cos115) , shouldn't it be final - initial velocity , which is (25cos115 -25) ?

    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

    • 126.PNG
      File size:
      10.5 KB
    • 127.PNG
      File size:
      10.7 KB
  2. jcsd
  3. Mar 23, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    I agree. At that point, the author is calculating the force the vane exerts on the water, which with positive to the right should be negative.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted