Name: Penny and Feather
Category: Mechanics
Subcategory: 1-D Motion
Classes:
Comments: Shake the penny and the feather to one end of tube. The tube is filled with air. Quickly bring the tube to a vertical position and watch the objects fall. Connect the tube to the pump. It takes less than 1 minute to pump air out of the small tube. Close valve and disconnect from pump and repeat the experiment in air.