Resonance
### Definition / Formula
$$\omega=\omega_0$$
### Terminologies
- ω → Angular frequency of external force.
- ω₀ → Natural angular frequency.
### Conditions / Special Cases
- Maximum amplitude occurs when:
$$\omega=\omega_0$$
- Energy transfer is maximum at resonance.
### Usage
- Used in tuning systems, musical instruments, and vibration analysis.