1C20.10 - Penny and Feather

Penny and Feather tube

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PIRA Classification: 1C20.10

Description: A tube containing feather and ball is tipped upside down resulting in the ball falling faster than the feather. The tube is then evacuated. The tube is tipped again to show both objects fall at the same rate.

Special Instructions: Allow tube to pump down until the needle on the gauge reaches the marked line.

Condition: Good

Setup time: 5 minutes