resonance

Question

At resonance, amplitude is maximum when driving frequency equals:

RankGuru · Accepted Answer

Resonance occurs when a system is driven by an external periodic force whose frequency matches the system's own natural frequency of oscillation ($f_{drive} \approx f_{natural}$).
- In this state, the system absorbs energy from the driver very efficiently, leading to a dramatic increase in the amplitude of oscillation. 
- Examples include a child on a swing or the collapse of the Tacoma Narrows Bridge.

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resonance

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