I've tried googling this but haven't found anything in basic terms. Someone help please!
I think it has to do with the frequency of an object once you strike it? Well what if you strike it harder? how can it have a "resonance frequency" ??
I think it has to do with the frequency of an object once you strike it? Well what if you strike it harder? how can it have a "resonance frequency" ??
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Striking it harder wouldn't change the frequency. It would change the amplitude of the wave, which makes it louder.
Imagine you are sitting on a swing in a park. Now what happens when you pump your legs back and forth as fast as you can? Do you start to swing higher and higher? NO. This is because you are canceling out some pumps of your legs with others. When you sit on a swing you swing slightly and you time the swinging of your legs with the "frequency" of the swing you are on. Each time you swing your legs you go a little bit higher because your legs are adding to the swing.
That swing has a resonance frequency (which is given by the equation for a pendulum).
Same thing with a wine glass. If you strike it, you can detect its resonance frequency. If you play a loud noise just like when the opera singers break the glass in the cartoon, the glass will vibrate because of the sound waves. If you don't play a note that is the resonance frequency of the glass, the sound waves will sometimes cancel the movement of the glass, just like moving your legs too quickly on the swing. But, if you play the right musical note, the resonance frequency, each sound wave will build constructively (meaning they add to each other) until the glasses amplitude (how much is moves when it vibrates, the same as how far your swing was moving) is too great for the material to tolerate and then BAM! It breaks.
So, the resonance frequency is the frequency with which some external source must exert a force (swinging legs, sound wave, wind pushing a bridge, etc.) so that each application of the force adds constructively.
Other frequencies have the exerted force adding destructively (where the forces sometimes cancel each other).
Imagine you are sitting on a swing in a park. Now what happens when you pump your legs back and forth as fast as you can? Do you start to swing higher and higher? NO. This is because you are canceling out some pumps of your legs with others. When you sit on a swing you swing slightly and you time the swinging of your legs with the "frequency" of the swing you are on. Each time you swing your legs you go a little bit higher because your legs are adding to the swing.
That swing has a resonance frequency (which is given by the equation for a pendulum).
Same thing with a wine glass. If you strike it, you can detect its resonance frequency. If you play a loud noise just like when the opera singers break the glass in the cartoon, the glass will vibrate because of the sound waves. If you don't play a note that is the resonance frequency of the glass, the sound waves will sometimes cancel the movement of the glass, just like moving your legs too quickly on the swing. But, if you play the right musical note, the resonance frequency, each sound wave will build constructively (meaning they add to each other) until the glasses amplitude (how much is moves when it vibrates, the same as how far your swing was moving) is too great for the material to tolerate and then BAM! It breaks.
So, the resonance frequency is the frequency with which some external source must exert a force (swinging legs, sound wave, wind pushing a bridge, etc.) so that each application of the force adds constructively.
Other frequencies have the exerted force adding destructively (where the forces sometimes cancel each other).
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Resonance is a condition in which a vibrating system responds with maximum amplitude to a periodic driving force.Mechanical systems will have a number of possible frequencies at which this occurs. These are the system's natural frequencies of vibration. When resonance occurs, the frequency is often called a resonant frequency. This is just saying that resonance occurs when the driving force has the same value as one of the natural frequencies.A beam can have more than one natural frequency, and therefore can be made to resonate at more than one frequency.
An LC series electrical circuit will resonate at a frequency given by f= (1/2π)√LC
This could be called its natural frequency or its resonant frequency. It doesn't really matter. It's usually called its resonant frequency.
An LC series electrical circuit will resonate at a frequency given by f= (1/2π)√LC
This could be called its natural frequency or its resonant frequency. It doesn't really matter. It's usually called its resonant frequency.
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Idk.....