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Math Help - im having trouble with this one.

  1. #1
    Junior Member
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    im having trouble with this one.

    im having some trouble figuring this one out. i would appreciate any help.thanks

    An aquarium 8m long, 3m wide, and 3m deep is full of water. Find the following:
    the hydrostatic pressure on the bottom of the aquarium
    the hydrostatic force on the bottom of the aquarium
    and the hydrostatic force on one end of the aquarium
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  2. #2
    Super Member Aryth's Avatar
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    a) The formula for hydrostatic pressure is:

    P = \rho gh

    \rho = density

    h = \text{distance below surface}

    We know that:

    \rho_{water} = 1,000 \frac{kg}{m^3}

    h = 3 m

    g = 9.8 \frac{m}{s^2}

    Therefore:

    P = 1000*9.8*3

    P = 29.4 kPa

    b) The formula for Force is:

    F = PA

    The Area of the bottom of the tank is:

    A = length*width = 8 * 3 = 24 m^2

    So:

    F = 29400*24

    F = 705,600 N

    c) I'll have to do later if no one does it by the time I come back.
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  3. #3
    Junior Member
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    thanks for your help

    nice thanks a lot i figured out number 3 which was 29400/2*9=132300
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