What is resonant vibration?
Answer:
It is when the amplitude of the oscillation is at a maximum, this is due to the 'induced vibration frequency' matching that of the 'natural frequency' of the object.
http://en.wikipedia.org/wiki/resonance...
In electronics, resonance is the tendency of a capacitor and an inductor to oscillate at a frequency of 1/(2PI(LC)^0.5). It is possible due to the combination of the curent flow in the inductor lagging the applied voltage by 90 degrees at the same time that the current leads the applied voltage by 90 degrees in the capacitor.
Resonance occurs in other areas of physics as well; in fact, the resonance of a spring with a weight is so analogous that the formula for the resonant frequency is virtually the same.
Elastic masses have the same property. Tesla once attached some sort of alarm clock-based contraption to a wall of his lab which gave a hammer-bump to the wall at some specfic frequency, apparently resonant to the building. He stopped it before the walls started collapsing
Vibration that HUMMMMMMMMMMMMS!
In physics, resonance is the tendency of a system to oscillate at maximum amplitude at a certain frequency. This frequency is known as the system's resonance frequency. When damping is small, the resonance frequency is approximately equal to the natural frequency of the system, which is the frequency of free vibrations.
Examples are the acoustic resonances of musical instruments, the tidal resonance of the Bay of Fundy, orbital resonance as exemplified by some moons of the solar system's gas giants, the resonance of the basilar membrane in the biological transduction of auditory input, resonance in electrical circuits and the shattering of crystal glasses when exposed to a strong enough sound that causes the glass to resonate.
A resonant object, whether mechanical, acoustic, or electrical, will probably have more than one resonance frequency (especially harmonics of the strongest resonance). It will be easy to vibrate at those frequencies, and more difficult to vibrate at other frequencies. It will "pick out" its resonance frequency from a complex excitation, such as an impulse or a wideband noise excitation. In effect, it is filtering out all frequencies other than its resonance.
Theory
The intensity is defined as the square of the amplitude of the oscillations. This is a Lorentzian function, and this response is found in many physical situations involving resonant systems. Γ is a parameter dependent on the damping of the oscillator, and is known as the linewidth of the resonance. Heavily damped oscillators tend to have broad linewidths, and respond to a wider range of driving frequencies around the resonance frequency. The linewidth is inversely proportional to the Q factor, which is a measure of the sharpness of the resonance.
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: