Ball and feather in air/vacuum

De PhyLab
Révision datée du 11 octobre 2017 à 18:05 par Ljacques (discussion | contributions) (video link added)
(diff) ← Version précédente | Voir la version actuelle (diff) | Version suivante → (diff)
Sauter à la navigation Sauter à la recherche


Back to 1C - Motion in one dimension
PIRA index: 1C20.10

Description

A feather falls more slowly than a ball down a tube due to air resistance. When the tubes are evacuated, both the feather and ball fall with equal speed.

Equipment

  • Double tube assembly
  • Vacuum pump
  • Clear flexible tubing
  • Power cable
  • Extension cord

Instructions

With both cylinders in air, rotate the tubes by 180 degrees...

Keywords

ball, drop, feather, vacuum

Images & Movies