2. A suitcase slides down a ramp between Points A and B as shown below. It has an initial velocity of 2 m/s and a mass of 2.1 kg. The coefficient of static friction between the suitcase and ramp is 0.3 while the coefficient of kinetic friction between the suitcase and ramp is 0.2. Answer the following questions. a. To analyze the suitcase using Newton's 2nd Law of Motion, do you need to know the weight, the mass, or both? Justify your response. 2.7 m b. Do you need to use static friction, kinetic friction, or both in this analysis? Justify your response. c. Draw and label a free-body diagram (using S.P.R.E.A.D.) and a kinetic diagram of the suitcase. Hint: There is an advantage to rotating your x-axis to be along the surface of the ramp. Do not label the figure provided. d. What is the friction force acting on the suitcase as it slides down the ramp? Show your work.

2. A suitcase slides down a ramp between Points A and B as shown below. It has an initial velocity of 2 m/s and a mass of 2.1 kg. The coefficient of static friction between the suitcase and ramp is 0.3 while the coefficient of kinetic friction between the suitcase and ramp is 0.2. Answer the following questions. a. To analyze the suitcase using Newton's 2nd Law of Motion, do you need to know the weight, the mass, or both? Justify your response. 2.7 m b. Do you need to use static friction, kinetic friction, or both in this analysis? Justify your response. c. Draw and label a free-body diagram (using S.P.R.E.A.D.) and a kinetic diagram of the suitcase. Hint: There is an advantage to rotating your x-axis to be along the surface of the ramp. Do not label the figure provided. d. What is the friction force acting on the suitcase as it slides down the ramp? Show your work.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.3P: Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair...

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