1. Not finding help here? Sign up for a free 30min 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!

Water pressure question

  1. Apr 24, 2008 #1
    hi, i'm stuck on a homework task i've been given..help will be greatly appreciated:))

    image link: img168.imageshack.us/my.php?image=image1vn3.jpg

    setup is as follows:
    image 1 . a tube (1ft diameter) submerged in water. tube is filled with air-filled balls( 1ft diameter) which tightly fit all the way in the tube, leaving only small water pockets in between.

    image 2. same tube. solid object , no water gaps.

    at 10ft depth, what would be the pressure that will have to be exerted on the uppermost ball in order to push the first ball out of the tube . i cant understand the buoyancy issue...??will it be equal to the sum of the buoyancy forces of all the balls?or will it be the pressure (kg/cm2) at a depth of 10ft. ...bit of a mess:)

    what will be the difference if the shape was like that in image2? i want to calculate what would be the force to push the object 1ft deeper into the water outside the tube??

    thank you
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 25, 2008 #2
    anybody??

    ANybody???
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Water pressure question
Loading...