Resonance

Resonance refers to the phenomenon where an object or system vibrates at a specific frequency when exposed to external vibrations or forces that match its natural frequency. This can lead to amplified oscillations and vibrations. It’s a concept commonly observed in various fields, from physics and engineering to music and even human emotions.

Bridge collapses during army marches can occur due to resonance. When a large group of soldiers marches in unison on a bridge, they create rhythmic vibrations that can match the bridge’s natural frequency. If the frequency of the soldiers’ marching steps matches the natural frequency of the bridge, it can lead to resonance, causing the bridge to vibrate and oscillate excessively. This excessive vibration can weaken the bridge’s structural integrity, potentially leading to a collapse if the vibrations are strong enough to cause damage. Proper engineering and understanding of the bridge’s dynamics are crucial to prevent such incidents.