FPT 2018 IPT connect | FPT 2018 Physics Fights Classement Problèmes Participants Jurés

2. Erratic raindrops

When a car moves with high speed in rain sometimes the drops on its side window walk up but not down. Explain the phenomenon and find the conditions for it to occur (size of the drops and the car speed for example). What determines the drop trajectory and how does it depend on the important parameters? Only lab experiments are expected!

Report Opposition
Aix-Marseille Université

7,40

5,75

CentraleSupélec

8,60

8,60

ENSTA

6,00

Grenoble Alpes Université

7,80

Université Paris-Diderot

6,20

Université Paris-Sud

7,20

Université de Lyon - UCBL - ENS de Lyon

8,80

Université de Strasbourg

6,75

6,80

École Polytechnique

9,00

Moyenne

7,43

7,39