Questions tagged [vibrations]
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How to find resonant frequency of this spherical mass? [closed]
how to find resonant frequency of this spherical mass in the diagram above? and also, the resonance frequency of mass on an elastic beam with viscoelastic contact with the beam
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How can I interpret the normal modes of this mechanical system?
How can I interpret the normal modes of this mechanical system?
The equations of motion for the system are as follows:
$$\left[\begin{array}{ccc}
m_{1}\\
& m_{2}\\
& & 0
\end{array}\...
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Why potential energy is not considered in the internal energy of diatomic molecules?
In thermodynamics, I am taught that there are 5 degrees of freedom in diatomic molecules since there are 3 for translational and 2 for rotational. I interpret degrees of freedom as "ways you can ...
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Is it possible there can be a non-Fourier model of string vibration? Is there an exact solution?
I am looking for a model of string vibration that does not assume the string is Fourier. Is there a Hamiltonian?
The equation of motion must be a function of length and tension, not time, and it must ...
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Understanding Loop Formation in a Plucked String
I have a question regarding the formation of loops when a string is plucked at different fractional lengths.
In a book I referenced, it is stated that plucking a string at 1/6 of its length produces 3 ...
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Is sound louder in a solid compared to air?
Consider this experiment, where it is shown that the sound of the metronome is louder when you hold the acoustic sensor directly towards the table. Many explanations in the internet argue that it is ...
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Question about waves in a fixed string
consider a string that is fixed at both ends. This string is connected to a metal stick. When I hit the metal stick, sound waves (longitudinal and transversal ?) will propagate trough the metal and ...
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How to determine Viscous Friction Damping Coefficient?
I was studying The Simscape Stirling Engine Model and in the Slider Crank - Flywheel part in the rotational damper block, it requires the value of damping coefficient in the script it uses this ...
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Why does $\rm{H_2 O}$ have 12 degrees of freedom?
I know there will be 3 translational D.O.F. and 3 rotational D.O.F., and it can have 4 vibrational D.O.F. (one potential and one kinetic) for each O-H Bond. But from where does 2 more D.O.F. come from?...
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Vibrating Reeds and Pipes
Hold a wooden ruler so it protrudes from a desk top. Flick it, and you get a "twang" sound. The ruler acts like a vibrating reed. Blow across an empty bottle's neck and you get a "...
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Suction Whistles
Dr Theodore Folsom built a Pipe Harmonica (US Patent 2754714, 1952), in which two whistles are attached to a single airway. One whistle is sounded by blowing, the other by inhaling. Sam Hinton can be ...
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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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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 ...
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Molecular stretching oscillations directions
Molecular stretching oscillations directions.
If we say that vertical oscillation is up/down. Then, left/right and front/back are horizontal oscillations.
Hence, when we measure oscillations of ...
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Frequency, if any, of a string with two different thicknesses [closed]
Very brief question. Assume a string that is made half out of a thin rope and half out of a thick rope (the thick rope is heavier of course). A transverse mechanical pulse is applied at one end (...
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