Midterm Physics 132 Page 4 - 4 A cord of linear density...

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Unformatted text preview: 4) A cord of linear density 0.002 kg/m is tied between two posts which are one meter apart. When the cord is excited to its 2“‘1 harmonic it vibrates at a fi'equency of 112 Hz. a) Sketch the displacement of the cord and write down the wavelength of the wave on the cord (3pts). b) What is the tension in this cord? (4pts). Ifanother cord is now tied between the posts but with a slightly greater tension and excited to its 2"d harmonic at the same time as the first cord a beat note at 5 Hz is heard. c) What is the frequency of Vibration of the second cord? (3pts) M = 0,0002 l<9/m {1:151 Hz a.) - ...
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