In a mechanical system of say 5 elements of different stiffness and masses are mechanically assembled together.
One of the 5 elements start to resonate by an external force.
The amplitude of the vibration is measured in each of the elements during resonance. Each element shows different amplitude of vibration at resonance frequency.
The task is to determine which element is actually resonating.
Is the element with the highest amplitude of vibration is the one that is resonating?