lab7 - λ=2(1.327(2 f=√(9.8(12.087*1.55x10^-4 = 1.33...

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The Vibrating String Preformed on Thursday October 5, 2000 Peter M Myers Section 442
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Object: To study mechanical resonance, by using a fork of known frequency to create standing waves. To teach students that frequency can be found by viewing the nodes and using the formula. Procedure: First thing that needs to be done is to place an amount of mass at the end of the string to make a wave in the string. By changing the amount of mass the waves can be shortened or streached, we can see the waves by counting the number of nodes in the string . Sample Calc: λ = 2(L) / N f = √g / slope ( u )
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Unformatted text preview: λ=2*(1.327)/(2) f=√(9.8/(12.087*1.55x10^-4) λ = 1.33 f=72.33 Hz Error: % error= ((theor. – exp.) / theor. ) * 100 = ((80-72.33)/80)*100 = 9.59% Conclusion: While the lab was not as successful as previous labs, it was still a success. The error was relatively low, and the object was achieved. The group found with relative ease the pattern that the mass created with the nodes. The error that did occur could be in the a bad measurement of the string, not exact number of nodes, the nodes not being formed fully, and friction on the pulley down to the mass....
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lab7 - λ=2(1.327(2 f=√(9.8(12.087*1.55x10^-4 = 1.33...

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