Resonance
Physics: AQA A Level, topic 6.1.7
Resonance
When a new frequency is applied to an oscillating system the amplitude of oscillation will change.
Resonance
- If the applied frequency is close to the natural frequency, resonance will occur and the amplitude will be at a maximum.
- If the applied frequency is different from the natural frequency the amplitude will be reduced to almost nothing.
Resonance curves
- The amplitude of oscillations can be plotted against applied frequency to give a resonance curve.
- It is easy to see that the closer the applied frequency is to the natural frequency the larger the amplitude.
- The effect of damping is also clear, the more damping the smaller the amplitude and the wider the resonance peak.
Test yourself on Resonance
When does resonance occur?
What effect will overdamping have on a resonance curve?
Which of these statements are true of resonance?