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Pressure on Sphere

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

    Basically I need to find the pressure on a solid sphere of brass 10,000 feet below the ocean. diameter of the sphere is 11 inches.

    2. Relevant equations

    62.4 lb/ft3 p=F/A

    3. The attempt at a solution

    This is part of a larger problem where I need to find the change in diameter, the change in volume and the strain energy, but first I need to determine the uniform stress compressing the ball.

    I figured if I took the column of water above the sphere using 62.4(10,000) then subtracted the excess at the largest cross section of the sphereIE. 62.4(10,000)-(1ftx1ft)-pi(5.5in)^2. If im right this should give me the weight of the water directly above the sphere. I can then use this weight and divide by the surface area over the entire sphere to get the stress. I have tried variations of this but to no avail.

    Ideas? Thank you
  2. jcsd
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