Session_11_Powerpoint

Session_11_Powerpoint - 180 N The coefficient of static...

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PHYS 1100 SI Session 11 Coates 218 Leader – Mel Triay 2/28/2012

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Agenda Friction (General) Kinetic Friction Static Friction
How Friction Behaves Magnitude of net nonfriction force Magnitude of Friction Force S l o p e = 1 Zero slope, constant Static Range Kinetic Range

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Friction
Example 1

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Practice Set 1

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Static Friction Variable, depending on the situation ‘Minimum force to move…’ and ‘maximum force w/o motion’ problems Testing for motion

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Example 2 A toy chest and its contents have a combined weight of

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Unformatted text preview: 180 N. The coefficient of static friction between toy chest and floor is 0.42. A child attempts to move the chest across the floor by pulling on an attached rope. (a) If θ is 42°, what is the magnitude of the force that the child must exert on the rope to put the chest on the verge of moving? Practice Set 2 Practice Set 2 F Answers Static Friction – Does it move? Example 3 Answers Connected bodies Example 4 B A Answer Practice Set 3 Practice Set 3 ? 13. 5...
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Session_11_Powerpoint - 180 N The coefficient of static...

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