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Homework Help: Depth and pressure in a submarine

  1. Jan 31, 2016 #1
    1. The problem statement, all variables and given/known data

    As a submarine dives, the pressure on its hull..

    a. remains constant
    b. increases
    c. depends on the decrease in volume of the submarine
    d . decreases
    e. depends on the thickeness of the walls of the submarine
    2. Relevant equations

    P = F / A
    3. The attempt at a solution

    Not a.

    Not c. since the volume remains constant. Ballasts are simply used to allow in water in order to dive...

    Not d. Pressure increases as one goes deeper.

    I think the answer is either b or e. The pressure on the hull does increase but that is compensated by increasing the thickness of the hull....
  2. jcsd
  3. Jan 31, 2016 #2


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    Gold Member

    The thickness of the hull only determines it's strength ie the pressure it will withstand before imploding . Therefore correct answer to you problem is ?
  4. Jan 31, 2016 #3
    Yes that makes sense. Thus the pressure on the hull increases as the submarine dives. Correct?
  5. Jan 31, 2016 #4


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    Science Advisor
    Gold Member

    That is correct .
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