1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Pressure of fluid on submarine

  1. Dec 9, 2007 #1
    1. The problem statement, all variables and given/known data
    a miniature sub is lowered to a depth of 8.5 m in sea water of density 1030 kg/m^3. The interior of the sub is maintained at a pressure fo 1.00 atm. Find the net force that must be withstood by a 1.5 diameter hatch which leads to the insisde.

    2. Relevant equations
    F= PA P= p + density X gravity X Hight

    3. The attempt at a solution

    Change in Pressure = 0 so P= 1030 X 9.8 X8.5
  2. jcsd
  3. Dec 9, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hint, there is also one atmosphere of pressure pushing down on top of the water, and one atmosphere of pressure pushing out from the inside of the sub.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook