Standing Waves 4. A wire of mass m = 2 kg is stretched between two walls a distance L= 10 m apart. It is set into oscillation. %3D (a) What is the wavelength of the first standing wave that can be excited? Sketch this standing wave. (b) What are the wavelengths of the second and third excited standing waves? Sketch them. (c) The string is under a tension of F,= 100 N. What are the frequencies of the first 3 standing waves? [Ans: 1.1 Hz; 2.2 Hz; 3.4 Hz] %3D A violin string vibrates (in its lowest mode) at 440 Hz when unfingered. At what -fourth of the way down from the end?

Question
#4 explain how you came to the answer please
Standing Waves
4. A wire of mass m = 2 kg is stretched between two walls a distance L= 10 m apart. It is
set into oscillation.
%3D
(a) What is the wavelength of the first standing wave that can be excited? Sketch this
standing wave.
(b) What are the wavelengths of the second and third excited standing waves? Sketch
them.
(c) The string is under a tension of F,= 100 N. What are the frequencies of the first
3 standing waves? [Ans: 1.1 Hz; 2.2 Hz; 3.4 Hz]
%3D
A violin string vibrates (in its lowest mode) at 440 Hz when unfingered. At what
-fourth of the way down from the end?
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Transcribed Image Text

Standing Waves 4. A wire of mass m = 2 kg is stretched between two walls a distance L= 10 m apart. It is set into oscillation. %3D (a) What is the wavelength of the first standing wave that can be excited? Sketch this standing wave. (b) What are the wavelengths of the second and third excited standing waves? Sketch them. (c) The string is under a tension of F,= 100 N. What are the frequencies of the first 3 standing waves? [Ans: 1.1 Hz; 2.2 Hz; 3.4 Hz] %3D A violin string vibrates (in its lowest mode) at 440 Hz when unfingered. At what -fourth of the way down from the end?

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