A platoon of soldiers marches on a road in steps according to the sound of a Marching band. The band is stopped and the soldiers are ordered to break the steps while crossing a bridge. Why?
Answers
Answer and Explanation ⇒ A platoon of soldiers marches on a road in steps according to the sound of a Marching band. The band is stopped and the soldiers are ordered to break the steps while crossing a bridge.
This is because, while marching soldiers pressed the legs together, which results in producing a sound or forced vibrations of the large frequency.
Now, It may happens that the Force vibrations of the large frequency which is made by them may match with the natural frequency of the Bridge.
If It happens so, then due to the Phenomenon of the Resonance, Bridge will also vibrates and hence Collapse.
Thus, they are asked to break the steps.
Hope it helps.
A continued rise in the amplitude or intensity of the vibration can cause the bridge to collapse.
Explanation:
- If the frequency of the soldiers' feet motion is equal to the bridge's natural frequency, and interference occurs between the soldiers' feet movement and the bridge movement, there is maximum energy transfer from the soldiers 'feet to the bridge, which raises the vibration amplitude.
- However, a continued rise in the amplitude or intensity of the vibration can cause the bridge to collapse.
Movement:- motion, or movement, is the condition that changes the position of something.
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