Verified Answer :

Answer:  The correct answer is resonance.

Explanation:

Resonance occurs when the applied frequency on the object is equal to its natural frequency.

This is the reason why the soldiers are told not to march on the bridge. Otherwise, it will collapse. As the applied frequency on the bridge will equal to natural of the bridge.

Therefore, the correct option is resonance.

Answer:

Resonance

Explanation:

  • In Physics when an object experience an applied force of certain frequency that matches the natural frequency of the object a phenomena called resonance occurs. When a force is applied at resonant frequency the system will oscillate at a higher amplitude as compared to the scenario when the same force is applied at a different frequency.

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