view" diagram). Determine what is the unknown speed of the bar in terms c quantities given in the problem (L, m, R, B, 0) and fundamental physical constants such as g.

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter12: Sources Of Magnetic Fields
Section: Chapter Questions
Problem 67AP: The accompanying figure shows a long, straight wire carrying a current of 10 A. What is the magnetic...
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An apparatus consisting of a metal bar that is free to slide on metal rails is
presented in the left side of the diagram ("Front view"). The metal bar (blue) has
length L, mass m, and resistance R. The metal rails have negligible resistance
and are connected at the bottom, making a conducting loop with the bar.
The entire apparatus is tilted at an angle to the horizontal, as seen in the right
side of the diagram ("Side view"), and immersed in a constant magnetic field of
magnitude B that points in the +y direction. Gravity, as is tradition, points in the -y
direction.
Front view
of apparatus
(what it looks like)
L
Side view of apparatus
(what it's doing)
B
( is constant but unknown)
Ï
O z out
of page
√F₁
Under these conditions, the bar moves at an unknown constant velocity
towards the closed-off bottom of the rails (down and to the right in the "side
view" diagram). Determine what is the unknown speed of the bar in terms of
quantities given in the problem (L, m, R, B, 0) and fundamental physical
constants such as g.
Transcribed Image Text:An apparatus consisting of a metal bar that is free to slide on metal rails is presented in the left side of the diagram ("Front view"). The metal bar (blue) has length L, mass m, and resistance R. The metal rails have negligible resistance and are connected at the bottom, making a conducting loop with the bar. The entire apparatus is tilted at an angle to the horizontal, as seen in the right side of the diagram ("Side view"), and immersed in a constant magnetic field of magnitude B that points in the +y direction. Gravity, as is tradition, points in the -y direction. Front view of apparatus (what it looks like) L Side view of apparatus (what it's doing) B ( is constant but unknown) Ï O z out of page √F₁ Under these conditions, the bar moves at an unknown constant velocity towards the closed-off bottom of the rails (down and to the right in the "side view" diagram). Determine what is the unknown speed of the bar in terms of quantities given in the problem (L, m, R, B, 0) and fundamental physical constants such as g.
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OpenStax
Publisher:
OpenStax