Which statement about friction and normal force is true? a. Kinetic friction is always in the...

Question

Question

Which statement about friction and normal force is true?

	a.	Kinetic friction is always in the direction of the normal force.
	b.	Static and kinetic friction do not depend on the normal force.
	c.	Static and kinetic friction forces are linearly related to the normal force.
	d.	Static friction is always in the direction of the normal force.

Answer 1

Answer #1

Option C is correct.

Kinetic friction= ukN

Static frictiom= usN

Here us and uk is friction coefficient. By this relation can say static and kinetic friction forcea are linearly realted to the normal force.

Answer 2

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