Period Definition and 997 Threads

Homework Statement Hi all. I am given the following discrete mapping: x_{n+1}=f(x_n)=x_n+r-x_n^2 for r>0. Objective: Find the r, where a period doubling takes occurs. Attempt: First I find the fixed points: These are x=-\sqrt{r} (which is unstable for all r) and x=\sqrt{r} (which is...

Homework Statement A pendulum is made of 2 disks, each of mass M and radius R separated by a massless rod. one of the disks is pivoted through its center by a small pin. The disks hang in the same plane and their centers are a distance L apart. Find the period for small oscillations...

Homework Statement A pendulum has a period of 1.8 s. Homework Equations Its length is doubled. What is its period now? The original pendulum is taken to a planet where g = 16 m/s2. What is its period on that planet? The Attempt at a Solution T=2pi sqrt(L/g) 1.8=2pi...

Homework Statement Earths´ satellite orbits 4200km above Earths surface. Count satellites´ trajectory circle-shaped and calculate satellites´period of revolution. The Attempt at a Solution I added the Earths´ radius to the 4200 km, which represents the orbiting attitude and then my mind...

Homework Statement A planet moves in an elliptical orbit around the sun. The mass of the sun is M_s. The minimum and maximum distances of the planet from the sun are R_1 and R_2 , respectively. Using Kepler's 3rd law and Newton's law of universal gravitation, find the period of...

Hey, can anyone give me some help? I'm trying to calculate the time unavailable of a system due to a component failure over a certain period of time. I know the probability of failure of this component, the time to be considered (assume 1 year) and how long the component is unavailable for...

Homework Statement If I have a frequency of 29k Hz, then the period is 1/29000, which is 3.44 * 10^-5 second Is this correct? Homework Equations The Attempt at a Solution

Homework Statement Given: angular frequency=2000pi phase velocity=320m/s period=? unknown Homework Equations f=w/2pi; w=omega. T=1/f. phase velocity = lambda/T The Attempt at a Solution i don't know what the sgnificance of the phase velocity is. this is because from 1/T = w/2pi, i...

Hey guys, I got the following problem. It seems east, btu I still have no idea how to get started on this one:frown:

pendulum lab... relationship between straight-line equation and period equation? hello. i am really puzzled! on my pendulum lab i have to compare the period equation to the straight line equation, and i must know what part of the period equation represents x? y? and m(slope)? please help if...

Homework Statement Sputnik I, the first artificial satellite to circle the planet (October 1957) had a mean orbital radius of 6953 km. Compute its period Homework Equations How do I compute the period? The Attempt at a Solution I thought that the radii of the sputnik could be...

Homework Statement The period of a mass m oscillating on a hookian spring of negligible mass. Homework Equations F = -kx The Attempt at a Solution I'm using x in place of ∆x for convienance. F = -kx dv/dt = -kx/m ∫vdv = -k/m∫xdx v^2 = C - k(x^2)/m: Placing the...

Homework Statement In recent years, a number of nearby stars have been found to possesses planets. Suppose, the orbital radius of such a planet is found to be 4.3 times 1011 m, with a period of 1080 days. Find the mass of the star. Homework Equations ? The Attempt at a Solution I...

Homework Statement A pulsar emits bursts of radio waves with a period of 10 ms. Find an upper limit to the radius of the pulsar. Homework Equations Not Sure The Attempt at a Solution Can anyone help with this, I cannot see how the period will help tell you the upper limit to the...

Homework Statement Using the energy method( setting potential energy= kinetic energy) show that the natural period of oscillation of the fluid in a u-tube manometer is t=2PI(l/2g)^(1/2) where L is the length of the fluid column. 2. The attempt at a solution So as you can see I do not...

If a mass that hangs suspended vertically from a spring is increased, then won't the period increase as a direct linear proportion? (Because the larger mass has a greater inertia and will require a larger force and longer time to change the direction of motion on each oscillation?) Some...

Homework Statement Ok so we started Fourier Analysis in circuits. How can i tell the Period of a function that's let's say sin(2t)+3cos(5t) something like that . Any help or url's that have information on this

anyone know how scientists measure the rotation period of the moon? thank you!

Homework Statement The figure shows a 230 g uniform rod pivoted at one end. The other end is attached to a horizontal spring. The spring is neither stretched nor compressed when the rod hangs straight down. K=3.0N/m and the length of the rod is 0.20m. What is the rod's oscillation period...

Homework Statement my question is simple and doesn't really fit the template. Is wavelength and period of a wave not the same thing?

Homework Statement I have a dataset of an oscillator with 51 measurements, I uploaded it http://home.orange.nl/~kuip3148/osc.dat . It's in the form of {time, position}. I have to find the period of this oscillator in Mathematica. Homework Equations I have to use the NonLinearRegress...

Homework Statement This is not like a wheel where distance does not matter because a particular point will pass at the same time no matter how far down or up the wheel. In this experiment, I used a string attached to a stopper (at the top) with a washer (on the bottom). There was a glass...

Homework Statement Calculate the Moon's Synodic Period Homework Equations N/A The Attempt at a Solution I am supposed to plot a graph of Time(y-axis) against Phase (x-axis), where phases is not a sin curve but a straight line, because we are adding upwards, ie from a new moon to...

Homework Statement The period of f is 5. If f(1)=4, f(2)=5, and f(4)=-2, the value of f(7) is: Homework Equations The standard format for trig functions is A\sinB(x-C)+D A is the amplitude, \frac{2\pi}{B} is the period (for sin or cos functions), C is the phase, and D is the vertical...

Homework Statement A space station is placed in an orbit of radius 30 000km. What is the period of the station's orbit around the Earth? (I previously worked out the period of rotation of the space station as 22 secs but I didn't think it was relevant to this part of the question besides...

Homework Statement A space station is placed in an orbit of radius 30 000km. What is the period of the station's orbit around the Earth? (I previously worked out the period of rotation of the space station as 22 secs but I didn't think it was relevant to this part of the question besides...

Homework Statement A 9.0x10^3kg satellite with an orbital radius of 3.20x10^7m orbits the Earth at an altitude of 2.56x10^7m. What is the orbital period?Homework Equations ΣFc = mac Kepler's third law equationThe Attempt at a Solution For this question I know that it is asking me to find the...

Homework Statement Mars orbits the sun at 1.52 Earth's orbital radius. What is the period of Mars in Earth years? Homework Equations ΣFc = mac The Attempt at a Solution I am unsure how to do this problem as this is the first "orbital period" question that I have encountered. Do I...

Homework Statement An object in SHM oscillates with a period of 4.0 s and an amplitude of 10 cm. How long does the object to move from x = 0.0 cm to x = 6.0 cm? Homework Equations x(t) = Acos(ωt +φ ) The Attempt at a Solution ω = π/2 Acosφ = 0 ⇒φ = ±π/2 Since object is moving...

In my physics class we did an experiment where we timed the oscillations of a lead bob when swung from a small angular displacement and were asked to find the relationship between oscillation time (period) and string length. We were given 4 possible equations and asked to find the right one and...

Homework Statement At what distance about Earth would a satellite have a period of 125 min? G=6.673x10^-11 T=125 Min Mass=5.97x10^24 Radius of Earth=6.38*10^6 Homework Equations T=2pi*Square root of (R^3/constant*mass) The Attempt at a Solution 125=2*3.14*Square root of...

- believed that ethics, or virtue, was valuable for the person, despite consequences -the healthy or virtuous personality has a clear moral vision, good judgment, and strength of will -each of us is made up of three elements: a physical body, spirit, and intellect: in the healthy soul, these...

A 424 g mass vibrates according to the equation x=0.342 sin(5.20t) where x is inn meters and t is in seconds. Find the amplitud, frquency, period, total energy, kinetic energy when x=12.0 cm, and potencial nergy when x-12.0 cm. Amplitud=0.342 w=2*pi*frequency...

someone told me about something along the lines of a male hormonal period. we go through through the same type of depression, etc... as girls? how accurate is this? because, i do notice every so often, for no reason at all i get somewhat depressed and can't control it.

I have trouble understanding how damping affects the period (of a torsion pendulum). I know that damping affects the amplitude of the oscillator, however how would damping change the period then? I have a feeling this has to do with angular frequency, w, given by: w = sqrt( (k/m) -...

Homework Statement A simple harmonic oscillator consists of a mass m and an ideal spring with spring constant k. Particle oscillates as shown in (i) with preriod T. If the spring is cut in half and used with the same particle, as shown in (ii), the period will be. A) 2T B) \sqrt{2}T C)...

Homework Statement A transverse wave on a string is described by the wave function y = (.120m) sin(pie/8 + 4pie(t)) (a) Determine the transverse speed and acceleration of an element of the string at t=0.200s for the point on the string located at 1.60m (b) What are the wavelength...

Homework Statement A rocket is accelerating upward at 3.70 m/s^2 from the launchpad on the earth. Inside a small 1.50-Kg ball hangs from the ceiling by a light 1.10m wire. a)If the ball is displaced 8.50 degrees from the vertical and released, find the amplitude of the resulting swings of...

Before begining, I would like to point out I did look at the following thread previous to this one, and thus have a few questions about that thread and it's application to this one: https://www.physicsforums.com/showthread.php?t=143536 Homework Statement The problem...

Hello, I am currently dealing with Fourier Series, and a question about the period length of a product of two periodic functions is bothering me. If you have two different periodic functions with different (or the same) period and you sum them up, what happens to the period? Can this generally...

Please help... Given that the distance to the sun from the Earth is 1.5*10^11 m and the the mass of the sun is 1.9*10^30 kg. Using Keplers law find the period of the Earth's orbit recorded in seconds; show how to express your anwser in years; and if your anwser does not agree with the accepted...

Homework Statement A slender, uniform rod of mass m and length l can be pivoted on a frictionless horizontal support at any point along the rod's length. The rod then moves as a physical pendulum for small oscillations about the vertical equilibrium position. Suppose that the pivot point is...

Homework Statement The formula to find the period of a pendulum is t=2pi √ L/g where pi = 3.14... L=length of pendulum g=gravity So I was wondering how all of this was put together. How they related together? Why it is multiplied by 2pi The Attempt at a Solution I really don't...

Homework Statement A physical pendulum is constructed using a 4.4 kg object having a moment of inertia of 33.9 kg-m2 about its center of mass. The rotation (suspension) point is 276.69 cm from the center of mass. What is the period of this physical pendulum? Homework Equations T =...

GPS (Global Positioning System) satellites orbit at an altitude of 2.0×10^7 m. Find the orbital period.(hours)I use the equation T=(2pi/sqrt(GM))r^(3/2). Shouldnt that be the correct way of doing it? I know I am supposed to add the altitude to the radius of the earth, G is known, M of Earth is...

Homework Statement Which of the elements, from the second period, has the highest density in its standard state? Homework Equations Standard state is gas at 1 atm, concentration of 1 M for liquid, or pure substance at 25C and 1 atm. The Attempt at a Solution I thought that N, O, F...

According to our lab manual, the graph of Wavelength vs Period : the slope should be the speed of sound. Well, I have a negative slope of -32.2 which is ridiculous, but I can't find out what I'm doing wrong. We had 5 tuning forks , say for instance, 512Hz...the inverse 1/f = 1/512= 0.00195 , I...

Homework Statement As you can see, I have a ball inside a ball. One with a density p1 and the other p2. the ball stand on a surface with friction so it can move without sliding. they move the ball from its rest point and release it. I need to figure out the period time, any idea...

Homework Statement The 4.00kg block in the figure (Intro 1 figure) is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended as shown in the diagram and the tension in the upper string is 82.0 N. Homework...

1.Sputnik I, the first artificial satellite to circle the planet (October 1957) had a mean orbital radius of 6957 km. Compute its period in seconds 2. I am using the equation T^2 = R^3/C 3. I converted 6957 km to AU's which equals 4.638 E-5. When I plug in the numbers, and convert...