# Questions tagged [oscillators]

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### Can photons with same energies have different amplitude?

Could two photons with same frequency have different amplitudes and so different peak velocities of oscillations perpendicular to their direction? (to make a larger distance in same interval you need ...
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### Gravitational Oscillation and Kepler's Third Law [duplicate]

I want to figure out the motion of a comet that can somehow pass freely through the sun (mass much, much greater than the comet's so that its movement is negligible) if it starts out stationary ...
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### What are the factors that affect the dampening of spring-mass system? [closed]

I'm trying to investigate how different values of spring constant affect the changes in amplitude and period of oscillations while the spring-mass system undergoes dampening. However, I have to make ...
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### Is it possible for two opposing magnetic fields to generate an oscillation?

Suppose you had two varying EM-fields both in opposition, but these fields have an associated curvature because the coils are circular, equal to one over the radius squared $c=\frac{1}{r^{2}}$ which ...
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### Finding the conditions for a resonant (unique single mode) state in the wave equation

If we have a string of length $L$ in constant tension $T$ and we oscillate one of the extremes at the rate $\sin{\frac{\pi nc t}{L}}$, we observe in a lab that single harmonics are produced. I want to ...
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### Is the time for a complete rotation of the plane of swing of a Foucault pendulum only a function of latitude?

The context is explained in this post: What is the reason for the orbital movement of the Foucault pendulum? But now my question is not about the orbital behaviour of the pendulum. I wonder if the ...
50 views

### Identification of oscillatory motion

How to check if a motion is oscillatory or not? What is the condition for an oscillatory motion?
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### Coupled oscilators doubts and cases

I'm having some troubles with some questions of coupled oscillators, there are not difficult questions but i doubt in my reasoning and i I have not found anything about this doubts. First of all, i ...
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### Time Period of a periodic function

Consider the following periodic function: $$f(t) = \sin(ωt) + \cos(2ωt) + \sin(4ωt)$$ What is the time period of the above periodic function? The following is given in my book: Period is the ...
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### Quantising a Damped Mass on a Spring

Background: this question discusses Lagrangian/Hamiltonian formulation of a dissipative problem. However, I'm not clear if this can be made quantum and would like a more explicit roadmap if possible. ...
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### Difference between oscillation and radiation?

Im doing this specifically in terms of the Zeeman effect, but in general I have read some stuff about osciallations and orientations that is confusing me. If we have a magnetic dipole, propagating a ...
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### By just looking at the time period of the oscillation, can we know whether the motion is simple harmonic or not? [closed]

My questions are: (1) By just looking at the time period of the oscillation, can we know whether the motion is simple harmonic or not? How? (2) Is the same true for angular (circular) SHM?
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### Nature of forces in damped oscillations [closed]

What type of motion is seen in damped oscillation. It is definitely not simple harmonic motion but then time period of the motion is constant and amplitude keeps on decreasing so physically what is ...
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### Combination of perpendicular simple harmonic motions [closed]

We solve questions for two simple harmonic motions which are said to be perpendicular but while solving their angles or phase differences is not 90° so what is the significance of perpendicular shms
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### Which equation to use for simple harmonic motion?

I recently started studying simple harmonic motion and I came across two equations for the displacement of a particle, as given in my textbook: \begin{align} y &= a\sin(\omega t +\phi)\\ x &= ...
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### How does neglecting the mass of a spring with non-negligible mass affect the calculation of the total energy of the oscillator?

Consider a spring-mass system with spring constant $k$ undergoing simple harmonic motion with amplitude $A$. How/why will neglecting the mass contributed to the oscillator by the spring itself affect ...
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The equation of motion for a Harmonic oscillator with linear drag is, by Newton's second law, $$m \ddot{x}(t)+b \dot{x}(t)+kx(t)=0.\tag{1}$$ This is a linear differential equation that can be solved ...
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### How long should I record the data of walking acceleration for FFT analysis?

Seems there is no apparent frequency of walking activity (it should be approximately close to 2 Hz) Is it because the time of the data is too short? Here is my csv file:enter link description here
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### Simple Pendulum with Arbitrary Velocity

I tried my hand at analytically solving the simple pendulum, and got an expression for its motion for arbitrary position and velocity. It matches with the expression found here exactly, which is for ...
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### How does the tuned mass damper on Taipei 101 work?

I'm interested in how the tuned mass damper on the top floors of Taipei 101 works, particularly how do engineers ensure that it dampens oscillation rather than making it worse. The damper can be ...
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### Should damping ratio increase or decrease with increase in mass?

I'm currently doing a small project in college for structures being damped. We're adding weights to a structure and measuring the damping affect. We've calculated the damping ratio and coeffecients, ...
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### Projection of elliptical motion

SETUP :- Here I have a line that rotates with a constant angular velocity and intersects a circle and an ellipse. The ellipse's major axis is equal in length to the diameter of the circle. The ...
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### How to obtain the time period from the Lagrangian equation for a simple pendulum?

Solving the Lagrangian equation for a simple pendulum we get the following equation: $$\ddot{\theta} + \frac{g \theta}{l} = 0,$$ (when $\theta$ is small enough). We already know that time period of a ...
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### How can I calculate the “wasted” force in a rotation-to-occillation piston?

A piston doesn't change its angle when its connecting rod's angle is changed from the pulling/pushing of the wheel/crankshaft because it needs to be inside of a constraint (a cylinder or track to hold ...
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### What is the reason for the orbital movement of the Foucault pendulum?

The Foucault pendulum, now in exhibition at the Paris Pantheon, is 67 meters high, with a period of oscillation about 16 s. Its oscillations last for more than one hour, when an employee manually ...
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