Strings and pipes

Organ pipes

Organ pipes Broadly speaking, the pipes of an organ are divided into two classes called flue pipes and reeds respectively. They may be either closed (stopped) or open. Open pipes have a more brilliant tone than stopped pipes, as they are able to produce more overtones. In the case of a flue pipe a jet of air impinges …

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Relation between length of air column and wavelength

Relation between length of air column and wavelength Consider the first position of resonance and suppose the lower fork prong is in its extreme upper position. As the prong moves downward through half a vibration it sends a pulse of compression down the tube, which is reflected from the water surface and returns to the mouth of the …

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Resonance

Resonance Everyone knows that the best way to set a child’s swing in motion is to give it small pushes in time with the natural period of the swing. This is an example of a general principle in physics which is called resonance. Resonance is said to occur whenever a particular body or system is set in …

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To measure the frequency of a tuning fork by using a sonometer

To measure the frequency of a tuning fork by using a sonometer The sonometer is tuned first to unison with a standard fork of known frequency and the length of the wire noted. Keeping the tension constant, it is now tuned to the unknown fork by altering the length only. Suppose the frequencies, in Hz, of the standard …

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Other factors which affect the frequency of a vibrating string

Other factors which affect the frequency of a vibrating string (a) Tension. The effect of tension can be investigated if the length of the string is kept constant while the tension is altered to bring the wire into unison with a number of standard forks in turn. The results show that the frequency is proportional to the …

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