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Theyfall4raven
23.07.2019 •
Physics
What is the frequency of the fundamental mode of vibration of a steel piano wire stretched to a tension of 440 n? the wire is 0.600 m long and has a mass of 5.60 g?
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Ответ:
where
L is the length of the string
T is the tension
Let's start by calculating the mass density of the piano wire in the problem. Its mass is
and its length is L=0.600 m, so its mass density is
Therefore now we have everything to calculate the fundamental frequency of the piano wire. Using T=440 N and the first equation, we find:
Ответ: