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A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 40.0 g and electrical resistance 0.400 N rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L= 10.0 cm apart. (Eigure 1)The rails are also connected to a voltage source providing a voltage of V- 5.00 V. The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B0.157 T. Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s for the magnitude of the acceleration due to gravity. Part A Find , the coefficient of static friction between the rod and the rails. Give your answer numerically. • View Available Hint(») le - 0.400 Submit Previous Answers * Incorrect; Try Again; 4 attempts remaining Provide Feedback

A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 40.0 g and electrical resistance 0.400 N rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L= 10.0 cm apart. (Eigure 1)The rails are also connected to a voltage source providing a voltage of V- 5.00 V. The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B0.157 T. Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s for the magnitude of the acceleration due to gravity. Part A Find , the coefficient of static friction between the rod and the rails. Give your answer numerically. • View Available Hint(») le - 0.400 Submit Previous Answers * Incorrect; Try Again; 4 attempts remaining Provide Feedback

College Physics
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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<Chapter 22 Rail Gun 7 A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 40.0 g and electrical resistance 0.400 N rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L = 10.0 cm apart. (Figure 1)The rails are also connected to a voltage source providing a voltage of V = 5.00 V . Part A Find us, the coefficient of static friction between the rod and the rails. The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B = 0.157 T . Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s² for the magnitude of the acceleration due to gravity. Give your answer numerically. • View Available Hint(s) ? Hs = 0.400 Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining Provide Feedback Figure 1 of 1 B
Transcribed Image Text:<Chapter 22 Rail Gun 7 A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 40.0 g and electrical resistance 0.400 N rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L = 10.0 cm apart. (Figure 1)The rails are also connected to a voltage source providing a voltage of V = 5.00 V . Part A Find us, the coefficient of static friction between the rod and the rails. The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B = 0.157 T . Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s² for the magnitude of the acceleration due to gravity. Give your answer numerically. • View Available Hint(s) ? Hs = 0.400 Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining Provide Feedback Figure 1 of 1 B
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