Mechanical Vibration -

Energy is gradually dissipated (by friction or resistance), causing vibration amplitude to decrease over time.

Occurs after an initial disturbance; the system oscillates at its natural frequency without external force. mechanical vibration

A dangerous condition occurring when the external forcing frequency matches the system's natural frequency, leading to high-amplitude, damaging vibrations. 2. Types of Vibration Energy is gradually dissipated (by friction or resistance),

Caused by external periodic, transient, or random forces (e.g., an unbalanced washing machine). leading to high-amplitude