Why Do Coupled Pendulums Exhibit Damped Oscillations?

[Fabio010]

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Can you explain me when we have a system with coupled pendulum, there are dumped oscillations?


Attempt: Because the system with coupled pendulum loses energy with time?

 

[voko]

Dissipation of energy is not a property of coupled oscillators. This is a property of damped oscillators. The diagrams are probably taken from physical pendulums, which are necessarily damped and thus lose mechanical energy.