Suspended Aluminum Rings and Magnets
Suspended Aluminum Rings and Magnets

 

Code Number: 5K20.26

Demo Title: Lenz's Law - Repulsion Rings

Condition: Excellent

Principle: Lenz's Law, Induction

Area of Study: Electricity & Magnetism

Equipment: 

Suspended Aluminum Rings and Magnets.

Procedure:

Suspend the chosen aluminum ring. Insert the magnet into the ring. The solid ring will be move away from the magnet, while the broken ring will show not effect.

References:

  • Roberto Hessel, "More on Faraday's and Lenz's Laws - Qualitative Demonstrations", TPT, Vol. 49, # 3, March 2011, p. 184.
  • Chang Geng Zhang and Shi Feng Hu, "Another Way to Demonstrate Lenz's Law", TPT, Vol. 40, #4, Apr. 2002, p. 249.
  • Don Kangas and Haym Kruglak, "Lenz's Law Demonstration", TPT, Vol. 27, #1, Jan. 1989, p. 50.
  • Thomas D. Miner, "Lenz's Law Demonstration", TPT, Vol. 6, #8, Nov. 1968, p. 427.
  • Robert Ehrlich, "N.3. Pumping a Hanging Coil With a Magnet", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 165 - 166.
University of Maryland Physics Department QOTW Question #170
University of Maryland Physics Department QOTW Answer #170
5K20.26 - University of Maryland QOTW Answer #170 Part 1
5K20.26 - University of Maryland QOTW Answer #170 Part 2
5K20.26 - Repulsion Rings - Unbroken and Broken rings