Waves - natural frequency Flashcards
What is meant by natural frequency
The natural frequency of an object is the frequency at which it oscillates when NOT being driven.
Do solids have more than one natural frequency?
Yes, they have one or more natural frequencies at which they oscillate when force is applied.
What is a driving frequency
The driving frequency is a forced vibration of an object
What is resonance?
Resonance occurs when the driving frequency is the same as one of the objects natural frequencies, therefore leading to large amplitude oscillation of an object
What does damping do?
decreases the amplitude of the object
On a response curve (amplitude, driving frequency), if there is a sharp peak at 5Hz, what does this mean?
It means that the natural frequency of the object is at 5Hz, resulting in large amplitude oscillation
On a response curve,(amplitude, driving frequency), if there is a slight peak at 7Hz, what does this mean?
This means that there is damping done by an external force, which decreases the oscillation of the particle.
