5. What is the coefficient of kinetic friction for rubber on dry concrete? How much frictional force retards the motion of a 15.000-N car with rubber tires as it skids to a stop on a horizontal dry concrete surface?
5. What is the coefficient of kinetic friction for rubber on dry concrete? How much frictional force retards the motion of a 15.000-N car with rubber tires as it skids to a stop on a horizontal dry concrete surface?
College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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
Transcribed Image Text:Worksheet 6 - Dynamics (Coefficient of Friction)
5. What is the coefficient of kinetic friction for rubber on dry concrete? How much frictional
force retards the motion of a 15,000-N car with rubber fires as it skids to a stop on a
horizontal dry concrete surface?
6. What is the coefficient of kinetic friction for rubber on wet concrete? How much frictional
force retards the motion of a 15,000-N car with rubber tires as it skids to a stop on a
horizontal wet concrete surface?
7. A 2-kg block is pulled to the left with a force of 19 newtons. If a 14-N force of kinetic
friction acts on the block, determine the block's acceleration.
8. A horizontal force of 6.5N pulls a 4.0-kg block along a level surface. If the applied force
produces an acceleration of 1.0 m/s2,
a. what is the net force acting on the block?
b. what is the force of kinetic friction?
A 12.0-N wooden block is pulled at a constant speed along a horizontal surface by a
horizontal applied force of 3.6 N.
a. what is the coefficient of kinetic friction?
b. compared to 3.6 N, what force was required to start the block moving
i. less
ii. more
ii. the same
ficient of friction.docx
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