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SHM: Damping Effects Pages
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Damped Oscillations Any oscillations that are taking place with the presence of one or more resistance forces, such as friction and air resistance. As a result of resistance forces, oscillations will eventually stop as the energy of its motion is transformed into other forms of energy—primarily thermal energy of both the environment and the system.
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Types of damping effects:
Under-damping: Small resistance forces Oscillations continue, but with a slightly smaller frequency than if force was not there Amplitude gradually reduces until it approaches 0 and the oscillations stop The larger the damping force, the longer the period and the faster it will stop oscillating
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Types of damping effects:
Critical Damping: The system returns to its equilibrium state as fast as possible without any oscillations Over-damping: The system returns to equilibrium without oscillations, but much slower than in critical damping Quick video demonstrating the 3 types of damping:
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Graphical comparison of damping effects
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