Calculate the first two modal frequencies for a flute 98.5cm long, which is open at both...

Question

Question

Calculate the first two modal frequencies for a fl

science physics

Answer 1

Answer #1

here,

For a tube open at both ends,

lamdan = 2L / n

→ where n is the harmonic number,

fundamental n = 1

so

fundamental lamda = 2L = 2 * 0.985 m = 1.97 m

for n = 2

lamda2 = 2 * L/2 = 0.985 m

for speed of sound 340 m/s,

the frequency , f = v/lamda = 172.6 Hz

the frequency 2 , f2 = v/lamda2 = 345.2 Hz

Answer 2

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