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Homework Statement
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.
Homework Equations
σ = F/A
The Attempt at a Solution
I'm just confused if it should be σ = F/A OR σ = F/(2A) and why.