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Buoyance - pressure on brick immersed in water

  1. Jun 21, 2009 #1
    1. The problem statement, all variables and given/known data

    Consider a brick that is totally immersed in water. The long edge of the brick is vertical. The pressure on the brick is

    A)greatest on the sides of the brick.
    B)greatest on the bottom of the brick.
    C)greatest on the face with largest area.
    D)greatest on the top of the brick.
    E)the same on all surfaces of the brick.


    2. Relevant equations

    fb=pvg


    3. The attempt at a solution

    i am guessing that it would be the same on all surfaces of the brick.
     
  2. jcsd
  3. Jun 21, 2009 #2

    Doc Al

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    Staff: Mentor

    Re: buoyancy/pressure

    What determines the pressure at a given point under the water surface?
     
  4. Jun 21, 2009 #3
    Re: buoyancy/pressure

    depth
     
  5. Jun 21, 2009 #4

    Doc Al

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    Staff: Mentor

    Re: buoyancy/pressure

    Exactly! Pressure depends on the depth beneath the surface. Use that to revise your answer.
     
  6. Jun 21, 2009 #5
    Re: buoyancy/pressure

    so it would be the bottom of the brick, because it has the most depth, thus the most pressure
     
  7. Jun 21, 2009 #6

    Doc Al

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    Staff: Mentor

    Re: buoyancy/pressure

    Correct.
     
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