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This lecture covers the concept of harmonic oscillators, starting with the modeling of oscillatory systems like springs and pendulums. The instructor explains the one-dimensional harmonic oscillator, differential equations, and the effects of damping on oscillations. The lecture also delves into forced oscillations, resonance phenomena, and the behavior of damped and forced harmonic oscillators. Practical examples are provided, such as the resonance of structures like bridges and the unwanted resonances in shock absorbers. The session concludes with a discussion on desirable and undesirable resonances in various systems.
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