Activity 2.6 - Introduction to FrictionKINETIC (SLIDING) FRICTION EXPERIMENT 1: Lay a heavy book flat on a table. Push lightly down on the bookwith one hand and move it horizontally with the other hand. You probably found there was not too muchresistance to the motion. Repeat the experiment but this time push down hard on the book and move it with yourother hand. This time there is much more resistance to the motion.The force that resists this motion is the kinetic friction force. The kinetic friction force occurs whenever twosurfaces slide against each other. It is parallel to the sliding surface and opposite the direction of the relativesliding. How hard you push down has an effect because the friction force is proportional to how hard the surfacespress against each other, ie, the normal force:fe = H₂ FNHere, is the coefficient of kinetic friction and depends on the surfaces involved. Note that has no units.Lets' analyze this experiment. A book of M = 3 kg is on a flat table. You push downward with a force of P, = 25 Nand horizontally with a force of P₂ = 45 N. The book starts sliding to the right. The coefficient of kinetic frictionbetween the table and the book is μ = 0.7.To solve this, we will follow the free body diagram method.a. Draw a labeled free body diagram showing the forces actingon the book and draw an arrow labeled "Ma" to the right ofthe "="sign indicating the direction of the acceleration.b. Write out Newton's 24 law in the x and y directions using theforces on the free body diagram (use the labels, don't sub innumbers). Write "0" on the RHS if a, or a, are zero.EF, = ma,EF, = ma,c. Use your y equation to solve for the normal force the tableexerts on the book. Give both symbolic solution andnumerical value.P₂ = 45 NP₁ = 25 NM = 3 kge. What is the acceleration of the book? Give symbolic answer and numerical value.Ax = 0.70+yட, +x11d. How large is the kinetic friction force the table exerts on the book? Give symbolic answer and numerical value.

Answered: Image /qna-images/answer/5d4c3638-257f-4494-9064-b25560838eea.jpg

To solve this, we will follow the free body diagram method. a. Draw a labeled free body diagram showing the forces acting on the book and draw an arrow labeled "Ma" to the right of the "="sign indicating the direction of the acceleration. b. Write out Newton's 24 law in the x and y directions using the forces on the free body diagram (use the labels, don't sub in numbers). Write "0" on the RHS if a, or a, are zero. EF, = ma, EF, = ma, c. Use your y equation to solve for the normal force the table exerts on the book. Give both symbolic solution and numerical value. P₁ = 45 N P₁ = 25 N M = 3 kg e. What is the acceleration of the book? Give symbolic answer and numerical value. M = 0.7 0 +y +x d. How large is the kinetic friction force the table exerts on the book? Give symbolic answer and numerical value.

To solve this, we will follow the free body diagram method. a. Draw a labeled free body diagram showing the forces acting on the book and draw an arrow labeled "Ma" to the right of the "="sign indicating the direction of the acceleration. b. Write out Newton's 24 law in the x and y directions using the forces on the free body diagram (use the labels, don't sub in numbers). Write "0" on the RHS if a, or a, are zero. EF, = ma, EF, = ma, c. Use your y equation to solve for the normal force the table exerts on the book. Give both symbolic solution and numerical value. P₁ = 45 N P₁ = 25 N M = 3 kg e. What is the acceleration of the book? Give symbolic answer and numerical value. M = 0.7 0 +y +x d. How large is the kinetic friction force the table exerts on the book? Give symbolic answer and numerical value.

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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