Question

why do rough surfaces have more friction than smooth surfaces​

Answer 1

Hi friend!

This is because rough surfaces contain a lot of irregularities that helps to have more friction. Irregularities are quite low in smooth surfaces. This is why there is less friction.

Hope it helps you!!!!

Answer 2

Answer:

A pair of rough surfaces will have more friction than a pair of smooth surfaces, because the “peaks” of one surface can fall into the “valleys” of the other, meaning that to keep moving either something needs to break, or the surfaces would need to push apart briefly

Explanation:

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