Chapter 6 Notes

# Chapter 6 Notes - Chapter 6: Further Applications of...

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Chapter 6: Further Applications of Newton’s Laws Friction - The friction force f exerted by the table on the block acts horizontally, parallel to the tabletop, in a direction opposite to the motion. This force, like the normal force, is a contact force which acts over the entire bottom surface of the block; however, in Figure 6.1, it is shown as thought acting at the center of the surface - The magnitude of the friction force between unlubricated, dry surfaces sliding one over the other is proportional to the magnitude of the normal force acting on the surface and is independent of the area of contact and of the relative speed - Friction involving surfaces in relative motion is kinetic friction. o F k = k * N - States that the magnitudes of the friction force and the normal force are proportional. - It does not matter which side of the block is in contact with the tabletop because the coefficient of stack friction, and the friction force is the same no matter what side. It is independent of the area of contact, only dependent of the materials that are in

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## This note was uploaded on 04/11/2008 for the course PHYS 142 taught by Professor Kolomeisky during the Spring '08 term at UVA.

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Chapter 6 Notes - Chapter 6: Further Applications of...

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