The force required to separate two plates containing liquid is determined by the angle of contact, which is 0 degrees in this scenario. For slow separation speeds, the derivation utilizes the Laplace Young equation, linking the curvature of the liquid bridge to the internal pressure. Conversely, for rapid separation, the problem is modeled as a squeeze film, solvable through the Navier-Stokes equations under axi-symmetrical conditions. Understanding these principles is crucial for accurately calculating the separation force.
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