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Unformatted text preview: ure 2. ure 2. The Experimental Set-up The Experimental Set-up gure 3. gure 3. Vibrating the metal rod Vibrating the metal rod easuring the temperature of the room easuring the temperature of the room eter eter ube w/ Lycopodium Powder ube w/ Lycopodium Powder ck ck osin osin d ABSTRACT. The velocity of sound varies with the medium where it travels. The velocity of the sound in a metal rod was obtained in the experiment by the application of the principles of the resonance. A metal rod that is clamped at its midpoint is stroked in a lengthwise manner to produce friction and energy in a form of longitudinal wave. A glass tube, containing lycopodium powder and is closed at its one end, is connected to the metal rod through a disk which is not touching the tube. When the wave enters the tube, it will agitate the dust inside and forms visible shapes of a wave. At the same time, the wave resonates and results on producing sound as well as generating constant frequency. Measurements of the length of the visible wave segments along with the length of the rod are done. The velocity of sound in air is also measured by recording the temperature of the room. Using the data, the experimental value of v m is obtained. Afterwards, a comparison with the theoretical value found in the book and with the value obtained from the elastic property of the metal is accomplished. For each comparison, we had obtained a percentage error of 0.429% and 1.35%, respectively, but still, lies within the velocity uncertainty range of . / . / 3460 09 m s 58 31m s . INTRODUCTION During your childhood, have you ever been tried to make a telephone toy using Styrofoam cup and a very long string? You noticed that at a certain distance, you still hear each other. Unlike without it, you still need to shout just to hear your friend. Generally, the speed of the sound is faster in solids than in liquids and gases. You also experienced that when you are in a baseball game or sat far away from the stage during a concert, you may have noticed something odd. You saw the batter hit the ball, but did not hear the crack of the impact until a few seconds later. Or, you saw the drummer strike the drum, but it took an extra moment before you heard it. It is due to light is faster than sound which we are used to see....
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This note was uploaded on 04/27/2011 for the course PHY 12L taught by Professor Agguire during the Spring '11 term at Mapúa Institute of Technology.
- Spring '11