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What is Pendulum Stability: Potential Energy Analysis about?
The potential for a pendulum is Π = -mgl(cosθ - cosθ0). When displaced counterclockwise, a restoring torque of mgl sinθ acts to return it to equilibrium. For static equilibrium, the net torque must vanish, meaning the potential is stationary - a minimum. A maximum potential would not provide a restoring force, so would be unstable.
- Author
- snkhaderi
- Language
- EN