1. J

    Physical Pendulum

    A pendulum consists of a tiny bob of mass M and a uniform cord of mass m and length L. (a) Determine a formula for the period. (b) What would be the fractional error if one used the formula for a simple pendulum?
  2. G

    Mechanic conical pendulum taut string

    I get that if one fixed string tauts, that means the string has a tension, so the condition is T>0. (Correct me plz if its wrong) But what if we have 2 strings (like in the image) and the question asks for the least value of w in order that strings are taut? Whats the condition for two strings...
  3. Mukilab

    Conical pendulum and changing angle

    If the mass is changed hanging on a conical pendulum, will theta change? I understand that the time period is independent of the mass, but theta is also dependent on the radius and height of the conical pendulum, which will surely change when the mass changes? Also, if you are given the angular...
  4. M

    A pendulum question

    Hello I have included pictures of the question I would like some help with and also the solution I have been given. I am fine up until part c. However I really do not understand how to do any part of c. So if there is anyone out there who thinks they could make it easier to understand your help...
  5. sakonpure6

    Wave length of a Pendulum

    Hi, I have the following problem. First of all, does the mass of the pendulum matter at all? and if not then I I would need to find the time in both cases and divide by 1 right? Using the equation d=v1t+0.5at^2 Time Pendulum A= 0.20 s which means that the period is 0.20 s. Time Pendulum B=...
  6. M

    Double Pendulum- Dynamics help

    A body of mass m hangs by a light inelastic string of length a from a body of mass 3mwhich in turn hangs from a fixed point O by a string of length a. The masses are confined to motion in avertical plane through O. Denote the horizontal displacements of the two particles from the vertical by x1...
  7. C

    Trying to find the intercept of a pendulum graphing prac

    I am using Open Office and have graphed both Time and Time squared to produce the graph. There might be a trick in Open Office Calc to give me the intercept but i havent found it . Can I get some help calculating the intercept of the two lines , or should I just estimate ? (Bow)
  8. C

    can you help me fing g gravity pendulum theory

    I have just begun year 11 & 12 at Tafe Brisbane. to get my seniour certificate. I was in hospital for first 3 weeks so im trying to catch up. I don't know how to isolate g in the equation :)
  9. mockingjay95

    Pendulum Problem using derivative of sine/cosine

    Pendulum completes swing (back and forth) each 6s. As it swings, the distance, d, in cm, depends on time t, in seconds. At t=1.3 d is at its max of 110cm. Its min is 50cm. D is sinusoidal function of t. I got the equation y=80+60cospi/3(t-1.3) using the methods from the book (find the sine...
  10. D

    Graphing Pendulum

    Hi, I need help on 3 questions that will be given in the attachment with the equation. It is about pendulums, look at the attachment for all the information. Please help and thanks in advance :)
  11. M

    Pit and Pendulum problem

    A simple pendulum consists of a lead bead hanging from a fixed point atthe end of a string of length L(metres). When the bead is moved slightly to one side and then released, it will swing to and fro. The time taken for the bead toperform a complete oscillation (i.e. to return to its starting...
  12. S

    Equation for Pendulum Ride

    At Canada's Wonderland, a thrill seeker can ride the Xtreme Skyflyer. This is essentially a large pendulum of which the rider is the bob. The height of the rider is given for various times: Time(s) 0 1 2 3 4 5 6 7 8 9 Height(m) 55 53 46 36 25 14 7 5 8 15 a. Find the amplitude, period...
  13. T

    Solving double pendulum with runge kutta

    I have four first order differential equations (see attachement diff.jpg). where g= 9.8m/s l1 = 0.216 m l2 = 0.241 m B = g/l1 alpha = l2/l1 u = 1 + m1/m2 = 2.22 // Initial values t = 0.0; theta1 = (141.7/180)*pi; theta2 = (169.8/180)*pi; p = 0.0; q = 0.0; the time step size , h=0.01s...
  14. P

    conical pendulum,, could somebody help please,,

    calculate the tension and angular speed in a 2m string attached to a 2kg bob that is moving in horizontal circles of 0.5m radius. i have traweld the net and the same formula keeps poping up Tcos(angle)=mg. after doing a sketch of the problem the first thing i did was to find the upper angle...
  15. R

    a sconds pendulum taks 1 s to move from one extreme to the other

    Hi A sconds pendulum taks 1 s to move from one extreme to the other what is time period ? what is frequency ? what happen to the time period if you take your pendulum to the moon ?
  16. F

    Pendulum problem

    A pendulum of period 2s is released from rest at an inclination of 5 degrees to the downward vertical. What is its angular velocity when it reaches the vertical? \tau=\frac{2\pi}{\omega} \omega=\frac{2\pi}{2} \omega=\pi however the answer in book is 15.7degrees/sec Further, When it first...
  17. wonderboy1953

    To Bruno J., Drexel28, Simple Pendulum, [email protected], NonCommAlg, Random Var and others

    More articles for the third ezine is needed. You and others have great math skills and I'm sure you think about math that would be worthwhile to put into an article. You have great flexibility on what you'd like to write about, as long as it's math related. So far me and a handful of others...
  18. M

    Ideal pendulum system - please help

    I have an ideal pendulum. In (S^1 x R): differential of theta = p differential of p = -sin(theta) this is all the information i have. i am trying to understand the system. are these polar co-ordinates with p being the displacement from origin and theta the angle? I am trying to understand...
  19. K

    Stimulink, pendulum question

    Just minor question, so basically I'm given θ'' + bθ' + sin(θ) = 0 and I'm suppose to plot with give initial conditions and time. So, one of my gain is set for b, but how would I set the gain for sin(θ)?
  20. A

    Equation of Motion for a Simple Pendulum

    I've already derived the equation, and simplified it to the linear case, now I have to solve it... The equation is: \frac{d^2\theta}{dt^2} = -\frac{g}{l}\theta Where l is length of the pendulum. Doing some research, I keep finding that the solution is: \theta = \theta_0...