A string of length L=1.68 m is attached at both ends. The string is parallel to an x-axis and extends from x = 0 to x=L. The speed of waves on this string is v = 285.6m / 5 . For standing waves: a. What is the wavelength of the fundamental mode (n-1 mode), 1, ? b. What is the frequency of the fifth harmonic, f;? c. Draw the envelopes of the string displacement wave function for the first three harmonics and label each node with the letter 'N' and antinode with letter 'A'. Please make three separate drawings.

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A string of length L=1.68 m is attached at both ends. The string is parallel to an x-axis
and extends from x=0 to x=L. The speed of waves on this string is v= 285.6m/s. For
3.
standing waves:
a. What is the wavelength of the fundamental mode (n=1 mode), 4 ?
b. Whatis the frequency of the fifth harmonic, f;?
c. Draw the envelopes of the string displacement wave function for the first three harmonics
and label each node with the letter 'N' and antinode with letter 'A'. Please make three
separate drawings.
d. For the third harmonic, n=3 , what are the three x values where the transverse speed of
the string is a maximum, X, Xm2, X3 compared to other xlocations?
e. For this string oscillating in the third harmonic (n=3), with a maximum deviation from
equilibrium of 2y. = 0.280 cm at points x= xml,X =Xm2,X= X3 , what is the
maximum (positive) transverse speed of the string (speed perpendicular to the direction
of the string), Max(u,(xmt)) ?
Transcribed Image Text:A string of length L=1.68 m is attached at both ends. The string is parallel to an x-axis and extends from x=0 to x=L. The speed of waves on this string is v= 285.6m/s. For 3. standing waves: a. What is the wavelength of the fundamental mode (n=1 mode), 4 ? b. Whatis the frequency of the fifth harmonic, f;? c. Draw the envelopes of the string displacement wave function for the first three harmonics and label each node with the letter 'N' and antinode with letter 'A'. Please make three separate drawings. d. For the third harmonic, n=3 , what are the three x values where the transverse speed of the string is a maximum, X, Xm2, X3 compared to other xlocations? e. For this string oscillating in the third harmonic (n=3), with a maximum deviation from equilibrium of 2y. = 0.280 cm at points x= xml,X =Xm2,X= X3 , what is the maximum (positive) transverse speed of the string (speed perpendicular to the direction of the string), Max(u,(xmt)) ?
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