Vibration 3.2 Flashcards
1
Q
What are free oscillations?
A
These occur when an oscillatory system is displaced and released
2
Q
What is damping?
A
The decrease in amplitude of an oscillation due to work done against resistive forces such as air resistance and friction
3
Q
What is critical damping?
A
When the resistive forces are large enough so that oscillations don’t occur when the system is displaced and released
4
Q
What are forced oscillations?
A
These occur when a sinusoidally varying driving force is added to an oscillation
5
Q
What is resonance?
A
If in forced vibrations, the natural frequency is equal to the forced frequency, the resulting amplitude will be very large
