IYPT 2011, Задачи на турнира — Задача 12. Levitating spinner

24th IYPT (2011)

Заглавие в източника

Source: Problems for IYPT 2011 (iypt.org, July 17, 2010)
Selected at the IOC meeting in Gössing on July 16—17, 2010
Reference Kit for 2011 (final edition, July 29, 2011) →
Exemplary solutions for 2011 →

Условие

A toy consists of a magnetic spinning top and a plate containing magnets (e.g. “Levitron”). The top may levitate above the magnetic plate. Under what conditions can one observe the phenomenon?

Решение

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Оригинал в Архива: 2011.txt