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HomeC. Kinematics and DynanmicsC4. Second Law Of MotionC4-32. Free Fall In Vacuum - Guinea And Feather
Free Fall In Vacuum - Guinea And Feather
Purpose
To demonstrate that bodies of extremely different densities fall with equal acceleration in the absence of air friction.
Equipment
Tube with weight and feather inside, mounted on vacuum pump cart as photographed.
Suggestions
Tube with weight and feather inside, mounted on vacuum pump cart as photographed.
Setup Time
5 min.
Images
Description
A long tube with a small weight and a feather inside is evacuated. Upon evacuation the weight and the feather fall with the same acceleration. With air in the tube, the feather falls much more slowly than the weight.
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See pagesc1. center of mass motion
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See pagesc3. first law of motion
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See pagesc4. second law of motion
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See pagesc5. third law of motion
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See pagesc6. friction
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See pagesc7. collisions
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See pagesc8. mechanical energy & power
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See pagesc1. center of mass motion
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See pagesc3. first law of motion
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See pagesc4. second law of motion
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See pagesc5. third law of motion
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See pagesc6. friction
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See pagesc7. collisions
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See pagesc8. mechanical energy & power
Physics Lab Demos