Question

what happens to the force of friction if the contact surface are made rought?​

Answer 1

Answer:

Two rough surfaces in contact have a much smaller area of actual contact than their total area. When there is a greater normal force as a result of a greater applied force, the area of actual contact increases as does friction.

Answer 2

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What happens to the force of friction if the contact surface are made rought?

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Friction is a force that opposes motion between any surfaces that are touching. Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. ... Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.

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