Estimate the fundamental frequency of resonance sound induced by blowi

AI Thread Summary
To estimate the fundamental frequency of resonance sound from blowing into a half-liter bottle, the formula f = 1c/4L is used, where L represents the effective length of the air column. The challenge lies in determining the length L, as the volume of the bottle alone (0.5 liters) does not provide sufficient geometric information without knowing the bottle's diameter or radius. The discussion highlights the difficulty in applying standard geometric equations to a bottle shape, which complicates the calculation. Participants express uncertainty about whether enough data is available to accurately calculate the fundamental frequency. Overall, the consensus is that additional measurements or assumptions are needed to proceed with the calculation.
cmkc109
Messages
103
Reaction score
0

Homework Statement



Estimate the fundamental frequency of resonance sound induced by blowing on the open end of a half liter bottle

Homework Equations



f= 1c/4L

The Attempt at a Solution



i don't know the length of L,
what's half liter bottle ..? What does it tell you? 2 x f1?
 
Physics news on Phys.org
A half liter bottle? That is the volume of the container, but I don't know any geometric equations for a "bottle", only objects that approximate a bottle, like a cylinder, but you cannot calculate the "L" of the bottle without the radius or diameter of the object.

150px-Bouteille.jpg

Cylinderr.gif


0.5 = pi*r^2*L

Not sure there is enough available data to calculate the fundamental frequency.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Resonant Lengths in open air column question
Replies
6
Views
3K
Tone produced in a partially filled bottle
Replies
2
Views
1K
I Need to Calculate the Speed of Sound for a Lab
Replies
4
Views
2K
What Is the Correct Water Level for the Third Resonance in a Closed-Open Tube?
Replies
3
Views
4K
Simple Harmonic Motion/Fundamental Frequency
Replies
5
Views
2K
Frequency of a wave at resonance
Replies
14
Views
2K
Frequency for resonance to occur
Replies
33
Views
3K
Resonance at low and high frequencies of 2 closed end tubes
Replies
7
Views
5K
Why Does Covering One End of a Pipe Change the Pitch of the Sound Produced?
Replies
3
Views
2K
Musical resonance of a cylinder/tube with a hole in the center
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top