Oscillating Definition and 304 Threads

I'm not sure if this question is something that has been asked before or if i thought about it myself or if it's completely ridiculous! But I was thinking, if, according to String Theory, particles are 1-dimensional strings that go through modes of oscillation, could they describe how a...

Greetings to all! I bring you all very strange and very peculiar tidings! I'll jump right into it: Over the course of the last two days, a small group of friends have been examining what appears to be a collection of magnetic disturbances over the south-eastern region of the United States...

Homework Statement A 200-g object is oscillating in simple harmonic monition with an amplitude of 2 cm and a period of 0.4 seconds. Find the velocity when its displacement from the equilibrium position is 0.5 cm. Homework Equations Restoring Force = -(constant force)(displacement)...

Homework Statement Two uniform solid spheres, each with mass 0.862 and radius 8.00×10−2 , are connected by a short, light rod that is along a diameter of each sphere and are at rest on a horizontal tabletop. A spring with force constant 164 has one end attached to the wall and the other end...

Homework Statement A 0.40- kg mass at the end of a spring oscillates 2.9 times per second with an amplitude of 0.20m. a)Determine the magnitude of the velocity when it passes the equilibrium point. b)Determine the magnitude of the velocity when it is 0.10 from equilibrium. c)Determine the...

Hi, I am doing some research into magnetic fields and I have a question. Are strong oscillating magnetic fields safe for human bodies? I am referring to the type of magnetic field in a speaker just a lot bigger. If you have any info that would be great.

Homework Statement How do I show that our equations for the E- and B-fields for the oscillating electric dipole do NOT satisfy Maxwell’s equations? Homework Equations After approximations in retarded potentials, we have our E- and B-field as following: E =...

How do I show that our equations for the E- and B-fields for the oscillating electric dipole do NOT satisfy Maxwell’s equations? After approximations in retarded potentials, we have our E- and B-field as following: E = -ω2μ_{0}p_{0}(4∏r)-1sin(θ)cos[ω(t-\frac{r}{c})]\hat{θ} (Griffiths...

I can't make this question work, so I'm hoping that someone here will be able to help guide me towards a solution. I began with F=ma, and wrote down the equations of motion for each of the masses. a) 2mx..1 = -kx1 -k(x1 -x2) and b) mx..2 = -kx2 +k(x1 -x2)Then I added b to a, and subtracted...

Homework Statement Consider a solid sphere of radius r to be placed at the bottom of a spherical bowl radius R, after the ball is given a push it oscillates about the bottom. By using the Lagrangian approach find the period of oscillation.Homework Equations The Attempt at a Solution Ok so this...

Hi all let suppose a charge is in oscillating (e.g antenna),it broadcast wave,and also suppose an observer oscillate , so the observer had saw the charge in fixed distance so we have not magnetic field. what we could say about the energy that the observer recived?

Homework Statement Greetings! This is an example problem at the end of Chapter 1 in Mechanics (Landau): A simple pendulum of mass m whose point of support oscillates horizontally in the plane of motion of the pendulum according to the law x=acos(\gamma t) . Find the Lagrangian...

If a particle of mass moves in a One-Dimensional harmonic oscillating potential, and the particle is in the first excited state, what will it's wave function look like? And the significance of it being in the first excited state versus the ground state? Thanks for the input!

Homework Statement A mass m that has net electric charge Q is oscillating along the x-direction on one end of a spring (whose other end is anchored) of relaxed length s0. Suppose that someone then swirches on an electric field E  that is uniform in space, constant in time, and which points...

In the following lecture (starting at 21:00), the professor says that when predicting the period of water oscillating in a U-shaped tube, that the "length" of the water column that you should use should be greater than the average of the length around the outside and around the inside. Can...

Homework Statement A circular disk with a rectangular hole has a radius of 0.600 m and mass of 0.390 kg. It is suspended by a point on its perimeter as shown in the figure. The moment of inertia about this point is I_p = 2.60E-1 kgm2. Its center of mass is located at a distance of s=0.120 m...

Homework Statement A hanging spring stretches by 30.0 cm when an object of mass 500 g is hung on it at rest. We define its position as x = 0. The object is pulled down an additional 16.5 cm and released from rest to oscillate without friction. What is its position x at a moment 84.4 s later...

Homework Statement A 2.10 kg bucket containing 13.0 kg of water is hanging from a vertical ideal spring of force constant 130 N/m and oscillating up and down with an amplitude of 3.00 cm. Suddenly the bucket springs a leak in the bottom such that water drops out at a steady rate of 2.00 g/s...

Homework Statement The position of a an air-track cart that is oscillating on a spring is given by (14.0cm)cos[(12.0s-1)t]. At what value t after t=0 is the cart first located at x=2.0 cm? The attempt at a solution y = Acos(wt+∅) y = 14cos(12t) 2 = 14cos(12t) (1/7) = cos(12t)...

Homework Statement Assume all oscillators are frictionless. e) A uniform thin rod (Mass M, length Lo) oscillates vertically on a frictionless axis perpendicular to the rod and passing through one end with period To. Now, a second uniform rod is made of the same material and mounted the same...

Homework Statement A small cuckoo clock has a pendulum 25 cm long with a mass of 10 g and a period of 1 s. The clock is powered by a 200 g weight which falls 2 m between the daily windings. The amplitude of the swing is 0.2 rad. What is the Q (quality factor) of the clock? How long would the...

Homework Statement This was a highly simplistic lab we did, and that I have been taking further for my personal enjoyment (I always enjoy deriving things). The lab was if you have a spring hanging from a hook with a spring constant k, place an object of mass m on the spring so it just...

Dear Collegues, Can you help me to answer theese : Describe the mechanical energy of the oscillating system, with the special interest in the equilibrium and extreme positions. And can u tell me please, that, what is angular frequency in this topic?

Oscillating mechanical systems. find maximum velocity and acceleration !? A mass of 0.3 kg is suspended from a spring of stiffness 200 N m–1. If the mass is displaced by 10 mm from its equilibrium position and released, for the resulting vibration A) Calculate maximum velocity B) Calculate...

Hello: I have been trying to find some information on choosing the width of a running average over a time dependent data set. Here is an example of what I am dealing with: The oscillations should be around the line y=15.6385 and I am wondering if there is a way to quantitatively detect...

Homework Statement Electric dipole makes small angle with uniform electric field. Find the frequency of the oscillation using dipole moment p, moment of inertia I, and field magnitude E. Homework Equations Torque=I*(angular acceleration)=I*(theta)'' Torque=p*E*sin(theta) The...

Homework Statement A body of uniform cross-sectional area A and mass density \rho floats in a liquid of density \rho_0 (where \rho < \rho_0), and at equilibrium displaces a volume V. Making use of Archimedes principle (that the buoyancy force actign on a partially submerged body is equal to...

Lets consider this definition: If the average power supplied to the system (absorbed power) is less than the average power lost by the system (emitted power) then the system is stable (during the time in which the power was averaged). Is such a definition of stability valid?

A string oscillates according to the equation y´ = (0.654 cm) sin[(π/4.0 cm-1)x] cos[(24.2π s-1)t]. What are the (a) amplitude and (b) speed of the two waves (identical except for direction of travel) whose superposition gives this oscillation? (c) What is the distance between nodes? (d) What...

Homework Statement A block on a frictionless table is connected as shown in the figure to two springs having spring constants k1 and k2. Find an expression for the block's oscillation frequency f in terms of the frequencies f1 and f2 at which it would oscillate if attached to spring 1...

Homework Statement A particle of mass m and charge q is attached to a spring with force constant k, hanging from the ceiling. Its equilibrium position is a distance h above the floor. It is pulled down a distance d below equilibrium and released, at time t = 0; Under the usual assumptions...

I'm about to build a plate reverb and I have some thought, or questions about the plate. The set-up is as follows: A rectangular plate, firmly tensioned in the corners. A forced motion entered. 2 or more pick-ups, piezo style. I'd like to know how the plate, it would be thickness...

I would appreciate help on this problem. Homework Statement Homework Equations f = (1/2L)*sqrt(F/u) The Attempt at a Solution This is vibrating at its fundamental frequency so L = (wavelength/2). To find k I reckon I need to find the force on the band and this should equal -kx. But I...

I have a question which I would like to know the answer to, I posted it before but don't think I was understood correctly, hopefully I can make myself clearer this time. Every physical object in this universe has a natural or resonant frequency from an atom to a planet. Attached is an image of...

Hi, In high school physics we are taught that when a charge oscillates it results in electromagnetic radiation. Then we are taught that electromagnetic radiation is a wave with the electric field oscillating in one plane and the magnetic field oscillating in a plane perpendicular to it. So if...

Homework Statement A rope, under tension of 120 N and fixed at both ends, oscillates in a second-harmonic standing wave pattern. The displacement of the rope is given by y = (1.18 m)sin ( x / 2) sin (10 t), where x = 0 at one end of the rope, x is in meters, and t is in seconds. (a)...

Homework Statement A 0.50-kg block attached to an ideal spring with a spring constant of 80 N/m oscillates on a horizontal frictionless surface. The total mechanical energy is 0.12 J. The greatest speed of the block is: Homework Equations E mech = 1/2kx^2+ 1/2mv^2 The Attempt at...

Homework Statement a 185g mass attached to a horizontal spring oscilates at 5.2Hz. At t=0s, the amss is at x=5.80 and has a vx=-40.0cm. determine the amplitude Homework Equations The Attempt at a Solution

Homework Statement a .25kg block oscillates on the end of a spring with a spring constant of 200N/m. If the oscillation is started by elongating spring to 0.15m and giving the block a speed of 3.0m/s. The amplitude is? Homework Equations omega= sqrt(k/m), Vm = (omega)Xm The Attempt...

Homework Statement A 0.835-kg block oscillates on the end of a spring whose spring constant is k = 41.0 N/m. The mass moves in a fluid which offers a resistive force F = -bv, where b = 0.662 Ns/m. a) What is the period of the motion? b) What is the fractional decrease in amplitude per...

Homework Statement A mass of 240 g oscillates on a horizontal frictionless surface at a frequency of 3.0 Hz and with amplitude of 4.5 cm. a) What is the effective spring constant for this motion? b) How much energy is involved in this motion m = 240 g = 0.24 kg A = 4.5 cm = 0.045 m f...

hey guys, i just started learning about tuned circuits. However, i can't understand the difference between line current and oscillating current and the reason for their different magnitudes in a parallel resonant LC circuit. Please clarify the difference between the two.

Homework Statement y' = (0.80 cm) sin[(π/3 cm-1)x] cos[(45π s-1)t] (a) What are the amplitude and speed of the two waves (identical except for direction of travel) whose superposition gives this oscillation? (b) What is the distance between nodes? (c) What is the speed of a particle of...

Hello there! I have a situation as follows: [PLAIN]http://img821.imageshack.us/img821/4026/kuglananagibu.gif I have to find the period of oscillation of the system. I've know how to set the equations for when solving the equations with forces, but am lost when trying to solve it with energy...

Homework Statement I am trying to figure out the equation to represent the motion of a weighted car attached to an ideal spring that is on an inclined plane (represented by Figure 1. Note, the car in my problem is attached to a spring , whereas in that picture it is attached to a string.)...

Homework Statement Find E for a quadrupole, oscillating sinusoidally. The method suggested is to take two Hertzian dipoles, a distance 'a' apart, and find the superposition of the two. They both have an equal dipole moment, and angular velocity, but have a phase difference of pi between them...

Homework Statement What does the free body diagram look like for a mass on an oscillating spring, when the mass is at its midpoint. Homework Equations F=-kx The Attempt at a Solution I'm not sure how an oscillating spring FBD is different from one for a non-oscillating spring. I...

Homework Statement Consider the simplified single-piston engine in the figure. The piston rod oscillates in simple harmonic motion. The wheel of radius 1.89 m rotates at a constant angular speed of 6.7 rad/s. (my own paint version of the figure) If the piston is fully extended at time t = 0, find...

Homework Statement a) Consider a driven mass-spring system with viscous friction using the notation of the lecture of Oct. 29, available on Vista. [The driving frequency is ω, the natural frequency is ω0, the friction force is -cv, the mass is m, the spring constant is k, the driving force is...

Homework Statement An electron is released from rest in an electric field (see picture attachment, it should explain everything). Upon release, it will oscillate due to the positive electric field. Find the frequency with which it oscillates. Homework Equations Coulomb's Law Equation...