Results 1 to 2 of 2

Math Help - Help!

  1. #1
    Newbie
    Joined
    Jul 2006
    Posts
    2

    Question Help!

    two dams form artical lakes of equal depth. however one lake backs up 15 km behind the dam, and the other backs up 30 km behind. what effect does the difference in length have on the pressures on the dams?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    10,372
    Thanks
    465
    Awards
    1
    Quote Originally Posted by Mohycha
    two dams form artical lakes of equal depth. however one lake backs up 15 km behind the dam, and the other backs up 30 km behind. what effect does the difference in length have on the pressures on the dams?
    Length does nothing. The pressure formula is P = P_0 + \rho gd where P0 is the pressure at the surface and d is the depth. This formula does not use the length of the container, so the length affects nothing.

    -Dan
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum