A conducting bar of mass m = 1kg and length l = 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 = i0. 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 = O after reaching initial angular speed w, = 100rad/s. Find the angular speed w of the rod at t = 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 l = 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 = i0. 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 = O after reaching initial angular speed w, = 100rad/s. Find the angular speed w of the rod at t = 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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Physics2(Electricity and Magnetism)
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-Faraday’s Law
-Inductance
-Alternating-Current Circuits
Transcribed Image Text:5)
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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 magne tic field B = 1T is applied perpendicular
to the rotating plane of the bar and the ring. The bar is released to rotate at t =
O 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) 47,23rad/s
b) 22,31rad/s
c) 10,54rad/s
d) 4,98rad/s
e) 2,35rad/s
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