Question

As the roughness of the surface of contact increases, the value of coefficient of friction
decreases
increases
remains constant
all of the above​

Answer 1

Answer:

The force due to friction is generally independent of the contact area between the two surfaces. ... Note that this relationship breaks down when the surface area gets too small, since then the coefficient of friction increases because the object may begin to dig into the surface.

Step-by-step explanation:

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