Drop a mass through the 1.5 m tube. It takes about half a second to drop. Then drop a magnet with an identical mass. It takes over 10 times as long to fall. As the magnet falls, it generates a current in the tube, moving in one direction above the magnet and in the opposite direction below. Both currents obey Lenz’s Law and induce magnetic fields that oppose the magnet’s motion. See the difference in weight as the magnet falls through the tube.
How It Works
As the magnet falls, it generates a current in the walls of the tube, moving in one direction above the magnet and in the opposite direction below the magnet. Both currents obey Lenz’s Law and induce magnetic fields that oppose the motion of the magnet.
What's Included
- 1x Lenz’s Law Magnet
- 1x Unmagnetized Slug
- 1x 1.5 m Aluminum Tube (2 cm ID, 0.28 cm wall)
- 1x Attachment Bracket for Spring Scale
- 1x Ohaus Spring Scale 10N
