10 - Rotating Ring

When a magnetic ring is left at the top of a ferromagnetic rod, several types of motion can be observed. Under which conditions does each type of motion appear? Which types of motion lead to the longest fall time for a given ring radius?

Report Opposition Moderation
Denmark

6.78

Greece

5.17

Israel

5.44

USA

4.00

Switzerland

7.39

5.39

Ukraine

6.39

Croatia

6.61

Germany

7.83

7.78

Austria

6.22

Canada

8.00

Mean :

6.19

6.60

6.46