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Weight of air on a piece of paper

  1. Apr 16, 2017 #1
    1. The problem statement, all variables and given/known data -
    What is the weight of air on a piece of 8 1/2" x 11" piece of paper? Assume you're at sea level.

    2. Relevant equations

    3. The attempt at a solution
    All I know is atmospheric pressure is 14.7 lb/in2 at sea level. I have no idea how to go about calculating this problem.
  2. jcsd
  3. Apr 16, 2017 #2


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    Staff: Mentor

    Did you even consider the units you wrote for pressure? What do they mean?
  4. Apr 17, 2017 #3


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    Science Advisor
    Homework Helper
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    2017 Award

    Paying close attention to the dimensions, is often all you need to figure out a likely formula. I keep the units through all calculations when working through a problem. It helps to show up mistakes that could be made (like dividing instead of multiplying, or maybe I forgot to square something). The answer will have the wrong units, then I will know that I need to go back and fix something.
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