Answer to Question #33498 in Mechanics | Relativity for Lela

Question #33498

The fundamental frequency of a closed tube is the same frequency as the 2nd harmonic of a stretched string. The mass per unit length of the string is 6.10e-4 kg/m. The tension in the string is 48.0 N.

a) what is the ratio of the length of the string to the length of the closed tube Ls/Lt

The length of the closed tube is 19.6 cm. The closed tube is played on one side of a room. The string is plucked on the other side of a room. A person jogs at a speed of 2 m/s away from the closed tube and towards the string.

b) what beat frequency will the person hear due to interference between the fundamental frequency of the closed tube and the second harmonic of the string?

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