MHB Sounds waves and guitar strings

AI Thread Summary
The discussion revolves around calculating properties of guitar strings based on their frequencies and physical dimensions. The frequency of the G string is 196Hz, and participants are seeking to determine its period and side-to-side velocity, as well as the diameter of the D string given that the tension of both the A and D strings must be equal. The formulas mentioned include those for wave velocity and tension, with a focus on how mass and diameter relate to these calculations. Participants express uncertainty about the formulas needed for the diameter and the relationship between tension and string dimensions. The conversation highlights the complexities involved in string physics and the need for specific formulas to solve the problems presented.
Mango12
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C=130Hz
G=196Hz
D=293Hz
A=440 Hz

The distance from the nut to the bridge is 58cm, the amplitude of the string vibration is 2.2mm

Part A: What is the period (T) of the G string?
Part B: What is the side to side velocity of the g string? (Think simple harmonic motion)
Part C: The diameter of the A string is 0.229mm. What is the diameter of the D string if the tension of both string must be equal?

I don't really know how to approach this, and any help would be appreciated. Thank you.
 
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Mango12 said:
C=130Hz
G=196Hz
D=293Hz
A=440 Hz

The distance from the nut to the bridge is 58cm, the amplitude of the string vibration is 2.2mm

Part A: What is the period (T) of the G string?
Part B: What is the side to side velocity of the g string? (Think simple harmonic motion)
Part C: The diameter of the A string is 0.229mm. What is the diameter of the D string if the tension of both string must be equal?

I don't really know how to approach this, and any help would be appreciated. Thank you.
UPDATE: I figured out how to do part A, but I still need help with part B and C
 
Mango12 said:
C=130Hz
G=196Hz
D=293Hz
A=440 Hz

The distance from the nut to the bridge is 58cm, the amplitude of the string vibration is 2.2mm

Part A: What is the period (T) of the G string?
Part B: What is the side to side velocity of the g string? (Think simple harmonic motion)
Part C: The diameter of the A string is 0.229mm. What is the diameter of the D string if the tension of both string must be equal?

I don't really know how to approach this, and any help would be appreciated. Thank you.

Hi Mango12! ;)

B. The length of the string corresponds to half of the wave length, which is how it vibrates.
C. Do you have a formula that includes the diameter of the string?
 
I like Serena said:
Hi Mango12! ;)

B. The length of the string corresponds to half of the wave length, which is how it vibrates.
C. Do you have a formula that includes the diameter of the string?

I figured out part B, but now I just have to do C.

I don't have any formulas with diameter in them. The only formula I have relating to tension is f=1/2\sqrt{tension/ML}
 
Mango12 said:
I figured out part B, but now I just have to do C.

I don't have any formulas with diameter in them. The only formula I have relating to tension is f=1/2\sqrt{tension/ML}

What is ML?
 
M is mass and L is length of the string...unless you know a different formula? And I also have V=\sqrt{tension/(m/L)}
 
Mango12 said:
M is mass and L is length of the string...unless you know a different formula? And I also have V=\sqrt{tension/(m/L)}

Isn't the mass dependent on the diameter? (Wondering)
 
I like Serena said:
Isn't the mass dependent on the diameter? (Wondering)

I'm not sure, what to do with this, but I just need Part C: The diameter of the A string is 0.229mm. What is the diameter of the D string if the tension of both string must be equal? I feel like tension cancels out somewhere?
 
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