The figure below shows an experimental device called the "disk of Arago" which was created in 1824 by Franagois Jean Dominique Arago (1786-1853). When a copper disk that looks like (a) underneath the magnet rotates, the magnet follows. However, when the original plate is divided into narrow bands with multiple radii, such as (b), the magnet does not turn along. (1) Why does a magnet rotate along a disk that looks like (a)? (2) Why does a magnet not spin along with a disk that looks like (a)?
The figure below shows an experimental device called the "disk of Arago" which was created in 1824 by Franagois Jean Dominique Arago (1786-1853). When a copper disk that looks like (a) underneath the magnet rotates, the magnet follows. However, when the original plate is divided into narrow bands with multiple radii, such as (b), the magnet does not turn along. (1) Why does a magnet rotate along a disk that looks like (a)? (2) Why does a magnet not spin along with a disk that looks like (a)?
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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The figure below shows an experimental device called the "disk of Arago" which was created in 1824 by Franagois Jean Dominique Arago (1786-1853). When a copper disk that looks like (a) underneath the magnet rotates, the magnet follows. However, when the original plate is divided into narrow bands with multiple radii, such as (b), the magnet does not turn along.
(1) Why does a magnet rotate along a disk that looks like (a)?
(2) Why does a magnet not spin along with a disk that looks like (a)?
Transcribed Image Text:(a)
magnet
Copper disk
(b)
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