DOES THE AREA OF CONTACT EFFECTS THE FRICTIONAL FORCE ?
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Friction is a contact force when two surfaces interact. ... Notice that both of these friction formulas ONLY depend on the coefficient of friction and the normal force. It does not depend the area of contact, it doesn't depend on the sliding speed.
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The more atoms that are interacting in the two surfaces, the greater the total frictional force. ... Greater contact area means greater frictional force. If the contact area is proportional to the normal force, then this looks just like Amontons' Law with the frictional force proportional to the normal force.
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