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Question
Explain why are soldiers asked to walk out of step while crossing bridges?
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Solution
When the soldiers walk in step, they produce some fixed frequency. If this frequency corresponds to the natural frequency of the bridge, the resonance can take place. This, in turn, will make the bridge to vibrate violently, and hence make it collapse. To avoid such a situation, the soldiers are asked not to march in step.
RELATED QUESTIONS
Define the Resonance phenomenon?
Resonance is a special case of ______ vibrations, when frequency of the driving force is ______ natural frequency of the body.
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(a) what is your observation? (b) Give reason for your observation.
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