Force exerted by water on gate

  • Thread starter sita
  • Start date
  • #1
1
0

Homework Statement



http://www.pictureshoster.com/thumbnails/fzfnh5lyl6epxx11dmp_thumb.jpg

the gate is connected by a hinge at point A and a force holds it shut at point C

water density [tex]\rho[/tex]=1000 kg/m[tex]^{3}[/tex]

width of the gate is 1m (into page)

Homework Equations



F = [tex]\sqrt{F_{h}^{2} + F_{v}^{2}}[/tex]
F = [tex]\rho[/tex]ghA



The Attempt at a Solution



i'm guessing to find the force due to the water i have to look at the horizontal and vertical components.. but i havent had an example before where the gate isnt just one straight line! nor one with water under the gate.. so i'm a bit lost as to what to do?

thanks for the help
 

Answers and Replies

  • #2
Q_Goest
Science Advisor
Homework Helper
Gold Member
3,001
39
Hi sita,
Welcome to the board. Do you know how to find the resultant normal force on each section? You have 3 sections, so reduce the force on each section to a single resultant force. Once you do that, you can find moments around a single point as well as sum forces vertically and horizontally. Does that help?
 

Related Threads on Force exerted by water on gate

  • Last Post
Replies
11
Views
3K
Replies
1
Views
5K
  • Last Post
Replies
2
Views
577
  • Last Post
Replies
8
Views
3K
Replies
14
Views
2K
Replies
8
Views
2K
Replies
3
Views
4K
Top