AP Resonance tube experiment: measurement of velocity of sound Resonance is the specific response of a system which is capable of vibrating with certain frequency to an external force acting with the same frequency. The two conditions for occurring resonances are: i) The frequency of applied force must be equal to the natural frequency of the system. ii) The applied force must be in phase with the system. In resonance tube experiment we mainly use two apparatus: tuning fork and resonance tube apparatus. A tuning fork is a U shaped structure made up of steel or an alloy of the aluminum based on stem as shown in figure. The tuning fork is set in to vibration by striking into the rubber pad by holding the stem. AP Resonance tube appa
