Free Fall Tube

An economical version of a classic device!  It  demonstrates that all objects experience the same gravitational acceleration and fall at the same speed in a vacuum, but in air the air resistance slows down some objects more than others.  Features a disc and a feather in a tough, clear, plastic tube, 90cm long and 4.5cm diameter, with rubber end caps and hose cock for connection to any standard vacuum pump (not included).  Includes activity guide.

Shipping weight: 1.6 Lbs., Dimensions: 40" x 3" x 3".