Physics12 Lab Report 2

Physics12 Lab Report 2 - Physics Lab Report 2 Standing...

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Physics Lab Report 2 Standing Waves Teddy Portney 2/12/07 Lab LK Section A I. Introduction Standing waves occur in a fixed object with some distinct length. Standing waves are essential to the way music is made. In most non-synthesized stringed instruments, the action of playing a note causes a string to be struck and vibrate at a certain frequency. This vibration creates a sound wave, which travels through the air and is perceived by human ears. In this lab, however, we didn’t deal with instruments or sound waves, rather a tuning fork, with a string attached at one end, constantly. For any wave propagating through a medium, we know the formulas v = √T/μ and f λ = v . Also, we know that d 2 = T/4 μ f 2 where d is the distance between nodes. And since both ends of the string are fixed, we can say that d = L/ n where n is the number of nodes that appear on the string and L is the total length of the string. Solving the two most recent equations, we can get a much more useful expression for the tension,
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Physics12 Lab Report 2 - Physics Lab Report 2 Standing...

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