Identifier:
M: S - 016
Concept Overview
Visual demonstration of stable, unstable, and neutral equilibrium
Lecturer Procedure
| Steps to Follow | Expected Result |
|---|---|
| Place cone on a circular base. | It is in stable equilibrium. |
| Attempt to balance cone on apex. | If it balances, it is in unstable equilibrium. |
| Lay cone on its side. | It is in neutral equilibrium. |
Use magnet to displace ball bearing. Remove magnet. | Ball rolls back and forth. |
| Allow ball bearing to roll on basketball |
Note:
Most lecturers prefer to only use the cone as a means of demonstrating equilibrium, but the other items are available upon request.
Historical References; Taken from original work of Percy H. Carr, 1970
“The various situations may be discussed either in terms of potential energy or in terms of forces set up when small displacements from the equilibrium position occur.”
Video Demonstration
Tutorial:
Set-up Instructions for M: S - 16
Transcript:
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