What is resonance? Explain with an example.

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In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies [Example] A familiar example is a playground swing, which acts as a pendulum

Resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies. A familiar example is a playground swing, which acts as a pendulum.