FPT 2021 IPT connect | FPT 2022 Physics Fights Classement Problèmes Participants Jurés

14. Rising in the bulk

If a vessel containing granular material is shaken appropriately, an item placed at the bottom will ascend upward through the material and emerge at the top. Explain the phenomenon and devise the most energy efficient shaking technique to raise the item up. https://youtu.be/GPaneRyQp6A

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ENSTA

7,70

ESPCI

6,50

Université de Lyon - UCBL - ENS de Lyon

7,38

École polytechnique

7,00

Moyenne

6,75

7,54