1. According to your text book, how do the coefficient of kinetic fricition and

Question

1. According to your text book, how do the coefficient of kinetic fricition and the coefficient of static friction usually compare in value? (which is typically larger?)

2. How do you expect the coefficient of kinetic friction to depend on the size of the contact area between the two sliding surfaces?

3. How dyou expect the coefficient of friction to depend on the normal force? For example, do you expect k to increase, decrease, or remain consntant as the normal force is increased?

i'd appreciate any feedback, thanks!

Explanation / Answer

1) The coefficient of static friction is always larger or equal to than the coefficient of kinetic friction.

2)   coefficient of kinetic friction , does not vary with the area of contact between the two objects. This means that coefficient of kinetic friction does not depend on the size of the contact area.

3)    coefficient of kinetic friction remain constant as the normal force is increased because The coefficient of friction depends on the materials used .

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