Q2) Figure (2) shows a vertical rectangular surface that has a width b. Prove that: FR = FR1 + FR2 where Aoil= (h₂h)b = 1 [Yoil (h₁ + h₂) Aoil + Ywater (h₂ + h3)Awater] and Awater = = (h3 -h₂) b h3 h₂ FR₁ Fig. (2) Oil Water
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