Phys 0174 Fall 2008 - Chapter 06, 4 slides

# Phys 0174 Fall 2008 - Chapter 06, 4 slides - Chapter 6 When...

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1 Chapter 6 Force and Motion II ¾ Describe the frictional force between two objects. ¾ Differentiate between static and kinetic friction ¾ Study the properties of friction. ¾ Introduce the coefficients for static and kinetic friction. ¾ Study the drag force exerted on an object moving through a fluid and calculate the terminal speed of the object. ¾ Revisit uniform circular motion. 2 When an object is in contact with a surface there is a force acting on that object. The component of this force that is parallel to the surface is called the frictional force . 3 When the two surfaces are not sliding across one another the friction is called static friction . 4 The magnitude of the static frictional force can have any value from zero up to a maximum value. MAX s s f f N s MAX s F f µ = 1 0 < < s Coefficient of static friction.

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5 Note that the magnitude of the frictional force does not depend on the contact area of the surfaces. 6 Static friction opposes the impending relative motion betwee two objects. Kinetic friction opposes the relative sliding motion that actually does occur.
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## This note was uploaded on 10/18/2011 for the course PHYS 101 taught by Professor Cohen during the Spring '10 term at Pittsburg State Uiversity.

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Phys 0174 Fall 2008 - Chapter 06, 4 slides - Chapter 6 When...

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