A conducting bar of mass m 1kg and length I 1m is in contact with a thin conducting circular ring as shown in the figure. The bar rotates about the pivot point o which is also the center of the ring. The ring and the bar are connected by a resistor R 10. A uniform magnetic field B= 1T is applied perpendicular to the rotating plane of the bar and the ring. The bar is released to rotate at t = 0 after reaching initial angular speed w, 100rad/s. Find the angular speed w of the rod att = 3s. (Assume that there is a good electrical contact between bar and the ring and ignore friction forces).

A conducting bar of mass m 1kg and length I 1m is in contact with a thin conducting circular ring as shown in the figure. The bar rotates about the pivot point o which is also the center of the ring. The ring and the bar are connected by a resistor R 10. A uniform magnetic field B= 1T is applied perpendicular to the rotating plane of the bar and the ring. The bar is released to rotate at t = 0 after reaching initial angular speed w, 100rad/s. Find the angular speed w of the rod att = 3s. (Assume that there is a good electrical contact between bar and the ring and ignore friction forces).

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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