| Eddy Currents: Magnetic Braking | ||
| Description: | Demonstrate a magnetic brake. |
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| Notes: | A suspended sheet of aluminum (non-magnetic) is allowed to swing freely, like a pendulum. While the sheet is swinging, move a horseshoe magnet so that the sheet is moving between the poles. The sheet will stop swinging very rapidly. Note that I used the smaller horseshoe magnet in the photos below; you might find the demo more satisfying if you use the large horseshoe magnet, since there is a larger separation between the magnet's poles, and they are less likely to hit the aluminum sheet. I was just lazy. |
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| Location: | LDL-D6. Aluminum sheet. It's been left connected to the rods and base for awhile, and is generally found on the floor. |
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| Image: |  The aluminum sheet between poles of horseshoe magnet |
 Oblique view. Use the larger horseshoe magnet so the aluminum sheet won't hit the magnet while swinging |
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| © | St. Lawrence University | Department of Physics |
| Revised: 09 Nov 2018 | Canton, NY 13617 |
