1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Resultant thrust and overturning turnning moments

  1. Jun 17, 2009 #1
    1. The problem statement, all variables and given/known data

    A vertical sluice gate is 5 meters wide and 3 meters deep. calculate the resultant thrust and overturnning moment when the water is level with the top edge of the gate.
    Density water = 1000kg/m^3

    2. Relevant equations

    Newton's First Law F = ma

    Moment = Force x Distance or M = (F)(d)

    3. The attempt at a solution

    I wondered if theses where the correct equations to use.
  2. jcsd
  3. Jun 17, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi speedy46! :smile:
    F = ma is Newton's second law … and it's a law of motion, and there's no motion here, is there? :smile:

    Yes, moment = force x distance, but you'll also need an equation relating force (which you don't know) to pressure (which you do). :wink:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook