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Homework Help: Mechanics: What area to use?

  1. Apr 2, 2015 #1
    1. The problem statement, all variables and given/known data

    In a simple mechanics question, which area should be used for a stress calculation? ex. A brick is compressed on 2 sides (opposite to each other) by a given compressive force F. The area of each of the sides being compressed is A.

    2. Relevant equations

    σ = F/A

    3. The attempt at a solution

    I'm just confused if it should be σ = F/A OR σ = F/(2A) and why.
  2. jcsd
  3. Apr 2, 2015 #2
    It's just σ = F/A. I forgot that A is cross-sectional area.
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