What is resonance tube experiment

Resonance is a common cause of sound production in musical instruments.The driving frequency and the length of the tube are varied to study their relationship to wavelength and the speed of the sound wave.The piston ts inside the tube and is attached to a rod that goes through a vertical plate in the stand.It consists of the closed organ pipe attached to the water reservoir.As you go up in frequency, you can up the voltage, maxing out at 1v.

The resonance with the shorter air column is the first resonance and that with the longer air column is the second resonance.When a periodic sound source (like a tuning fork) is situated at one end of a tube of air, sound waves travel down the tube and are re ected back at the end of the tube.You can observe standing wave patterns in a closed or open tube, and locate nodes and antinodes while varying the length of the tube.When the released sound wave is interfered with the wave reflected off the end of closed tube, the standing waves might occur due to the superposition of identical waves with opposite sign.V = f l where.

Repeat the previous two steps with different tuning forks, and make a note of how much the tube must be moved in order to achieve resonance for each fork.In this experiment the velocity of sound in air is to be found by using tuning forks of known frequency.In our experiment we will confine the sound waves to move in one direction with the use of a resonance tube apparatus.The piston ts inside the tube and is attached to a rod that goes through a vertical plate in the stand.To study resonance in this experiment, the length l of the air column will be varied for a given driving frequency (the wave velocity in air is relatively constant).

A sine wave generator drives an open speaker to create a standing sound wave in a resonance tube.V = velocity of sound propagation.Within the tube is a movable piston which effectively closes off one end of the tube.