A conducting bar of mass m = 18.0 g and resistance R = 1.89 N slides down two conducting rails that are frictionless and have no electrical resistance. These rails make an angle 0 = 40.0° with the horizontal and are separated by a distance l = 20.0 cm, as shown. In addition, a uniform magnetic field B = 712 mT is applied vertically upward. The bar is released from rest and slides down. R in (b) As the bar continues to slide, the forces approach equilibrium. What is the induced current in the bar when it is moving at 85.0% of terminal speed? a

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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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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Please just answer this question: Qualitatively discuss what effect considering the resistance of the conducting rails would have on your estimate of terminal velocity. Make sure to consider that as the rod slides,the overall resistance of the circuit increases as a function of that distance slid. Do you think this would lead to a larger or smaller terminal velocity than the one you calculated in part (b)?

(Note if it helps: I calculated an induced current of 0.049A for part b).

A conducting bar of mass m = 18.0 g and resistance R = 1.89 N slides down two conducting rails
that are frictionless and have no electrical resistance. These rails make an angle 0 = 40.0° with the
horizontal and are separated by a distance l = 20.0 cm, as shown. In addition, a uniform magnetic
field B = 712 mT is applied vertically upward. The bar is released from rest and slides down.
R
in
(b) As the bar continues to slide, the forces approach
equilibrium. What is the induced current in the bar
when it is moving at 85.0% of terminal speed?
B
a
0 (
Transcribed Image Text:A conducting bar of mass m = 18.0 g and resistance R = 1.89 N slides down two conducting rails that are frictionless and have no electrical resistance. These rails make an angle 0 = 40.0° with the horizontal and are separated by a distance l = 20.0 cm, as shown. In addition, a uniform magnetic field B = 712 mT is applied vertically upward. The bar is released from rest and slides down. R in (b) As the bar continues to slide, the forces approach equilibrium. What is the induced current in the bar when it is moving at 85.0% of terminal speed? B a 0 (
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