FrictionSaved to this PCDesignLayoutReferencesMailingsReviewView6SearchHelp11A A Aa- AoAaBbCcDc AaBbCcDc AaBt AaBbC Ab x, x A 0.A-目三三三,-田。1 Normal1No Spac. 1Heading 1 THeading 2FontParagraphStyleswould you have to apply to get the car to start sliding? If you continued to apply this sameforce, determine the acceleration of the car. If you pushed for 20 s, how far would the cartravel? (use dry concrete)MaterialsSteel on steel0.740.57Aluminum on steel0.610.47Copper on steelRubber on concrete (dry)Rubber on concrete (wet)0.530.361.00.80.30.25Wood on wood0.25-0.50.2Glass on glass0.940.4Teflon on Teflon0.040.04Teflon on steel0.040.04Waxed wood on wet snoW0.140.1Waxed wood on dry snoW0.100.04Metal on metal (lubricated)Ice on ice0.150.060.10.03Synovial joints in humansVery rough surfaces0.010.0031.5DELL FrictionSaved to this PCLayoutReferencesMailingsReviewViewHelp9 Search* A A Aa- A 三,三、市,国刷头TAaBbCcDc AaBbCcDc AaBl AaBbC Ax A-.A-四州加這,么、田,1 Normal1 No Spac. 1Heading 1 1 Heading 2ntParagraphStylesCoefficient of Kinetic FrictionName:1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If thecoefficient of static friction between the grass and sled is 0.9, determine if the sled moves ornot. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kineticfriction = 0.6)2.) A physics student (90 kg) on skis is pulled horizontally across the dry snow with a rope. If thereis friction according to the value below (waxed wood on dry snow), determine the forcenecessary to accelerate the student at 2 m/s².3.) The driver of a car (1100 kg) traveling at 30 m/s on dry concrete sees a deer in the distance andslams on the brakes and skids to a stop. How far does the car travel before stopping?4.) You find an abandoned car in a Walmart parking lot. The car is locked. You look up the car onKelly's Blue Book and find the mass to be 1200 kg. You go and push the car. How much forcewould you have to apply to get the car to start sliding? If you continued to apply this sameforce, determine the acceleration of the car. If you pushed for 20 s, how far would the cartravel? (use dry concrete)MaterialsDELL

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1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If the coefficient of static friction between the grass and sled is 0.9, determine if the sled moves or not. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kinetic friction = 0.6) %3D

1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If the coefficient of static friction between the grass and sled is 0.9, determine if the sled moves or not. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kinetic friction = 0.6) %3D

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q5
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1. Block C starts from rest and moves to the right with a constant acceleration of 1 m/s? due to the action a force F. Determine: a) the accelerations of A and B, b) If uk = .2 between the box C and the floor, determine the force F acting on C that is causing the motion and the tension in the cables. 1 kg 1 kg 4 kg B
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6. A cable is pulling on box B, causing both boxes to move together to the right. Make a free-body diagram of block A a. if the table is frictionless, and b. if there is friction between block B and the table and the pulling force is equal in magnitude to the friction force the table exerts on block B. B Horizontal table Pull
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A physics textbook is placed on an inclined slope with an adjustable angle a. The coefficients of friction between the book and the slope are us = 0.5 and uk = 0.35 %3D respectively. 1m a (i) Initially the book is not moving. Copy the diagram and draw all the forces acting on the book. Show mathematical expressions for the size (magnitude) of each force. If we slowly increase the angle a, at what angle does the book start sliding? (ii) Use the Work-Energy theorem to find a formula (expression) for the speed v of the book when it reaches the bottom, in terms of the angle a.
you need to push the couch 4 m to the other side of the room. After the initial push to get it going you push on the 90 Kg couch with a steady horizontal force of 600 N. The coefficient of kinetic friction between the couch and the floor is 0.6. 1) what is the magnitude and direction of the fictional force on the couch? 2) what is the magnitude and direction of the net force on the couch? 3) what is the magnitude and direction of the acceleration of the couch?
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6. A horizontal pull force of 35 N is required to just start a 6 kg box moving across a horizontal concrete floor. a) Draw the free-body diagram of the box, showing all of the forces acting on the box. b) What is the coefficient of static friction,μs, between the box and floor? c) The 35 N pull force continues, but now that the box is moving, it accelerates at constant a = 0.6 m/s². What is the coefficient of kinetic friction,μk?
2. Block 1 and block 2, with masses m = 5 kg and m2 = 2 kg, are connected by a system of massless, inextensible ropes and massless pulleys as shown in Fig. 2. %3D (a) the system. Draw the complete free body force diagram of Ceiling (b). Solve for the accelerations of block 2 and block 1. Assume that downward direction is positive. (c) Calculate the tensions in each rope. m2 Rope attached to the Floor Floor Fig. 2 B.
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