All Questions
Tagged with frequency vibrations
86
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How to measure the vibration of an object on a video shot at high speed camere?
I have a video fragment which I split into frames (pictures). I use them in pairs (1 frame with 2, 2 with 3, etc.) to find shifts on x and y axes (i.e. how much I need to shift 1 frame to make it like ...
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33
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What are the different types of resonances in forced oscillation systems?
I'm currently studying resonances in systems subjected to forced oscillations and have come across various terms and cases that I'd like to understand more clearly. Specifically, I am analyzing a ...
2
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0
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36
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Frequence vs speed of a moving object
Imagine swinging wood stick using hand (say it's a 1-meter long cylinder with 2 centimeter diameter, just for the sake of argument). When doing it fast (angular velocity = $\omega_1$), it will create ...
- 21
1
vote
1
answer
55
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String vibration dimensions
We're all familiar with the typical diagrams of standing waves of a string, as in this image from Wikipedia:
The thing that bothers me is that they ignore the reality that the string is vibrating in ...
- 11
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1
answer
96
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Is sound essentially motion?
From my understanding, the only way for humans to create sound is by moving our bodies, vocal cords, or by moving other objects. So depending on how fast we or other objects can move, different ...
- 109
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2
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101
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Does rhythm create pitch?
As in,
matter (a physical object)
that is vibrating
= a pitch
And secondly
If we calculate bpm with a “tick” which is just indefinite pitched percussion, how does an indefinite pitched beat compare to ...
- 109
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27
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Can someone please explain how is the setup stated below apparently causing amplitude resonance in spite of different frequencies?
Suppose I have a pendulum such that its natural frequency is $2 Hz$.
I release it from One extreme by striking it with a tuning fork of frequency $1 Hz$. Now in $0.5s$, the pendulum will undergo 1 ...
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2
answers
138
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What do we mean by 'resonance frequency' of a system?
Whenever we talk about oscillations, we generally take the term 'resonant frequency' for granted, but I don't understand what this frequency depends on.
For example, if we talk about a freely ...
- 87
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43
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FFT plot not aligning with lower natural frequencies
I have a cantilever beam with gapped springs on top and bottom and an impulse is given at the free end initially.
I modelled it using finite element method with 30 elements.
The beam then oscillates ...
- 11
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341
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Multiple Pendulums and Resonance
Set up with multiple pendulums suspended from a connecting string. Pendulums 1 and 4 have the same lengths and hence, the same natural frequencies. Others(pendulums 2, 3 and 5) are of varying ...
- 35
3
votes
2
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836
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How is maximum amplitude of resonance achieved?
Lets take a simplest case of a narrowly tuned system and the outside force exactly at the natural frequency of it. The first pulse will go through, bounce back somewhat weaker and get reinforced by ...
- 185
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32
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Transverse Vibrations of a Cantilever beam. Why does the % change in nth natural frequency increases with n in this case?
This is the problem in detail
I have a cantilever beam.
Now I am making it stand upright and adding water for different heights of SUBMERGENCE
I am doing this by adding an ADDED MASS term from the ...
- 11
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0
answers
45
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How do you Determine the Fastest Vibrational Mode of a Crystal?
I understand that a crystal's vibrational modes are Phonons and have a minimum wavelength that is limited by twice the equilibrium separation between neighbouring atoms. But I don't understand how you ...
- 385
3
votes
2
answers
608
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How can you change the resonant frequency of a solid guitar body?
I am trying to figure out if it would be possible to change the resonant natural frequency of a solid-body guitar. For example, let's say it resonates at 100 Hz and I want it to resonate at 200 Hz. Is ...
- 31
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1
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234
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Does air column change its frequency to one of its modes as and when needed?
The question might make it sound like I'm considering air column to be a conscious entity kinda thing, but what I really mean is,
Say I've a tuning fork ringing and I bring it near a test tube with ...
- 1,168