Oscillation Flashcards
What are the conditions for a Simple Harmonic Motion?
- The acceleration is directly proportional to the displacement from the equilibrium position.
- The acceleration is in the opposite direction of the displacement, or it is always towards the equilibrium position.
What is a free oscillation?
It is when there is neither resistive force nor driving forces acting on the system. The total energy is always constant and it oscillates with a constant amplitude and frequency called its natural frequency.
What is a damped oscillation?
It is one with experiences resistive forces. The oscillating system loses energy until it comes to a stop.
What is a Forced Oscillation?
It is one that is driven by an external periodic driving oscillator or driver. There is continuous energy input to the oscillating system by the driver, and the system oscillates at the frequency of the driver.
What is Resonance?
Resonance is the phenomenon in which there is maximum transfer of energy from the driver to the oscillating system in a forced oscillation. The oscillating system achieves maximum amplitude during resonance. For a undamped system, resonance occurs when the driving frequency equals the natural frequency of the oscillating system.
