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# A long string is moved up and down with simple harmonic motion with a frequencyof 42 Hz. The string is 543 m long and has a total mass is 47. The...

A long string is moved up and down with simple harmonic motion with a frequencyof 42 Hz. The string is 543 m long and has a total mass is 47.2 kg. The string is fixed atboth ends. If the string is fixed at a length of 28 m we find a third harmonic standingwave.a)What is the tension in the string?b) How long would the string need to be to find the second harmonic standing wave?

a) tension v =   (FT/μ) 1/2          v = f x 2l = 42 x 28x2 =2352      2352 = (FT /1.25663706 × 10 -6 ) 1/2... View the full answer

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