If more surface area = more friction, than why do textured objects that have less surface area “cling” better?
In: Physics
Everyone here saying friction is related to surface area is flat out wrong. Unless the surface area is insanely small then it may matter because the mall object can begin to dig into the larger one. Friction is related to the force between two objects and something called the coefficient of friction (K). K depends on the material of both surfaces. Your statement that textured surfaces hold more friction is generally true but not always. One of the highest know K values actually occurs between one smooth glass surface and another believe it or not.
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