7. Friction, Inclines, Systems
Kinetic Friction
2:23 minutes
Problem 5a
Textbook Question
Textbook QuestionIn a laboratory experiment on friction, a 135-N block resting on a rough horizontal table is pulled by a horizontal wire. The pull gradually increases until the block begins to move and continues to increase thereafter. Figure E5.26 shows a graph of the friction force on this block as a function of the pull. (a) Identify the regions of the graph where static friction and kinetic friction occur.
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