Exam-style question
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What is the effect of resonance in a bridge when a marching band crosses it?.
- A.It causes the bridge to vibrate at its natural frequency.
- B.It increases the structural integrity of the bridge.
- C.It reduces the amplitude of vibrations.
- D.It has no effect on the bridge.
Model answer
What a good answer should say
- It causes the bridge to vibrate at its natural frequency.
Explanation
Why this works
When external forces, such as a marching band, apply periodic forces at the same frequency as the bridge's natural frequency, resonance occurs, leading to increased vibrations that can potentially cause structural failure.
Common mistake
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