Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Fluids Mechanics Help!

  • 24-11-2011 10:44pm
    #1
    St3ph3n
    Registered Users, Registered Users 2 Posts: 22 ✭


    Can anyone help with this problem:

    A 1.5m-diameter floodgate placed vertically is 6m below the water level at it's
    highest point. The gate is hinged at the top and opens into the
    reservoir. Calculate the required horizontal force applied at the bottom of the gate
    in order to open it when the pressure on the other side of the gate in the outflow
    pipe is sub-atmospheric at -5m gauge pressure head.


    I am able to calculate the force acting on the reservoir side of the gate to be 34.65KN and also where it acts to be 4.51m. After that however i'm lost. I know I probably have to take moments around the hinge using the above data to eventually calculate the required force but I'm not quite sure as how to go about that.

    Any help would be greatly appreciated :)


Advertisement