How to use magnets in levitation?

  • Context: High School 
  • Thread starter Thread starter woodturner
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Discussion Overview

The discussion focuses on the feasibility of using magnets to levitate a wooden lid over a box without an electric power source. Participants explore various methods and considerations related to magnetic levitation, including the arrangement of magnets and the shape of the lid.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests using north-up facing magnets on the rim of the box and north-down facing magnets on the lid to create a magnetic bowl effect, which could help maintain horizontal positioning.
  • Another participant notes that the repulsive force keeping the lid floating could be easily disrupted by misalignment or side forces.
  • A different viewpoint proposes that making the lid circular and spinning it might be necessary for stability in the levitation setup.
  • A later reply references a Wikipedia article on magnetic levitation, indicating a potential source for further information on stability.

Areas of Agreement / Disagreement

Participants express differing views on the methods for achieving levitation, with no consensus on a single effective approach. The discussion remains unresolved regarding the best technique.

Contextual Notes

Participants do not clarify the assumptions regarding the strength of the magnets or the specific dimensions of the box and lid, which may affect the feasibility of the proposed methods.

woodturner
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I wish to find out if its possible to float a wooden lid over a box using magnets. without using electric power source,if so how?
 
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It is possible - but tricky.

I would try lining the rim of the box with north-up facing magnets.
Then I would line the edge of the lid with north-down facing magnets.
The lid magnets should outline a slightly smaller area than the rim magnets - so when the lid is on, it is sitting in a shallow magnetic bowl. That way, gravity will assist in keeping the lid horizontally positioned.

The problem will be that the repulsive force keeping the lid floating can be readily disrupted by side forces created when everything isn't aligned well.
 
If I recall correctly you have to make the lid circular and spin it.
 

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