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Giant Pendulum For Classrooms
Purpose
To demonstrate conservation of energy in a very dramatic way.
Equipment
Bowling ball pendulum, crane from Machine Shop.
Setup Time
15 min.
Images
Description
The instructor backs up against the backdrop, holds the pendulum bob up to his or her chin, and releases it.Because of conservation of energy the bob will swing across and return to its original position adjacent to the instructor's chin,but without hitting his or her chin. Despite the wariness of the students, the pendulum bob cannot rise to a height greater than its original height, and the instructor is safe.
References
PIRA 1M40.10)
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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