Mechanics

Gravitation

Lead and Wood Ball

Simultaneously drop a lead ball and a wood ball onto the floor. They will both hit the floor at the same time. Use this to demonstrate that acceleration due to gravity doesn’t depend on mass. Place a wooden pad from the simultaneous fall demo on the floor where the balls will hit.

Location:    Balls -                  ME2F-69-4
                  Wooden pads -   ME2F-05-3

Prep Time:    none

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Quarter and Feather

Use a vacuum tube with a quarter and a Styrofoam peanut. While the tube still has air, hold it vertically and flip it 180° . The quarter will fall faster than the Styrofoam peanut. Pump the air out of the tube. This time when you flip the tube over, the peanut will fall just as fast as the quarter. Don’t use a penny, nickel, or dime it gets stuck in the stopper.

Location:    Vacuum pumps -       ME0H-71-#
                  Vacuum tube -          ME0H-70-2

Prep Time:    none

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Juniata College
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