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PART - 2 CH - 13 Oscillations — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsPART - 2 CH - 13 Oscillations2 Marks
Question
Why are soldiers marching in unison asked to break up step (walk like a normal person) while crossing the bridge?
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Answer

If the soldiers walk in step, then the frequency generated due to the rhythm of their steps can be equal to the natural oscillation frequency of the bridge. Therefore, it can oscillate with high amplitude and cause resonance phenomenon which can cause damage to the bridge.

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