Difference: MagneticTorqueLab (4 vs. 5)

Revision 52019-10-03 - JorgeRodriguez

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META TOPICPARENT name="PHY4821L"
-- JorgeRodriguez - 2012-01-13
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Assignment: 1 Measure the magnetic moment of the disk

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<		The goal here is measure the magnetic moment of the magnetized disk at the center of the snooker ball. Instructions on how to perform the measurements are available from the teachspin website http://www.teachspin.com/magnetic-torque.html. (especially this doc.)
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>		The goal here is measure the magnetic moment of the magnetized disk at the center of the snooker ball. Instructions on how to perform the measurements are available from the teachspin website http://www.teachspin.com/magnetic-torque (especially this doc.)
 
  1. First measure the magnetic moment via the gravitational torque method. The torque exerted by the gravitational field on a rod with a sliding weight is compared to the magnetic torque due to the disk inside the ball. Plot your data, with error bars, and then fit to a straight line. Determine the slope of the line and its error from the fit. Use the slope to determine the magnetic moment and its uncertainty. How is this better than just averaging the results?
  2. Use the harmonic oscillation of the magnetized ball/disk system to determine the magnetic moment. Again fit your data to a straight line.
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