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Drop Lead and Cork Balls
# 1C20.15


Description: This demonstration is used to show that the acceleration due to gravity does not depend on the mass of the object. F = G(Mm)/(r*r) = ma. Solving this for acceleration gives: a = GM/(r*r).

Instructions: Simultaneously drop a lead ball and cork while standing on the lecture bench or small stool.

Hazards: When dropped on one's foot, a lead ball could cause some discomfort.

Parts: Cork
Lead ball
Small stool (if requested)
Pizza pan (if requested)

Purchased/Built: built

Quant. in Demo Room: 1

Demo References
Sutton M-80 Iron and wood balls are dropped simultaneously.
The Physics Teacher TPT 17(5),314 Hint on how to drop a heavy and light object simultaneously with one hand.

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