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Homework Help: Quick Easy Question about Fluids

  1. Nov 24, 2009 #1
    1. The problem statement, all variables and given/known data

    A rectangular metal can with dimensions of 0.234 meters by 0.194 meters by 0.143 meters is used in a physics demonstration to show the force exerted by air pressure. A small quantity of water is poured into the can and brought to a boil. Then the can is capped and allowed to cool, which crushes the can. What is the total force exerted on the can by the air around it, assuming a perfect vacuum inside?

    2. Relevant equations

    1 atm = 101300 Pa

    3. The attempt at a solution

    so just find the area of each of the three sides and multiply by 2

    so 2(.234*.194)+2(.194*.143)+2(.234*.143)
    and so i got .2132 m^2

    so then we know

    101300 Pa = N/m^2

    so 101300pa * .2132 m^2 = N

    so N = 21594.16

    am i right?
  2. jcsd
  3. Nov 25, 2009 #2


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    Staff Emeritus
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    Homework Helper

    Looks good!
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