# Phet Simulations Pendulum Swing

Determine the bullet’s velocity. doc), PDF File (. This swinging is due to the force of gravity. The higher energies of the contour plot do not close upon themselves. This is a simulation of a double pendulum. 4 returns a different period length. Task Test what will happen to the period of a. I think that I figured this out: The swing of a pendulum is governed by it's length, so the swing on the model is mechanically "wrong" because gravity cannot be scaled with the model. Measure the period using the stopwatch or period timer. edu Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the swing. This simulation mimics a real pendulum and allows you to adjust the initial position, the mass, and the length of the pendulum. 7 Vector Addition 13 2. Go to: Phet pendulum simulation ( http://phet. The inverted pendulum control was split in two main phases: the swing-up phase and the stabilizing phase. It's easy to measure the period using the photogate timer. The result also shows that the argument changes in near-harmonic mode and the swing plane changes in pulsing way. Click Here. edu/Name C Bires revised 12/2014_kanani Samuel The Pendulum Introduction to Harmonic Motion. The event flow works like this: The clock object created by the simulation steps the simulation on the specified in the interval. When the weight or bob is moved and let go, the pendulum will swing back and forth in a regular periodic motion. Observe the energy in the system in real-time, and vary the amount of friction. Pendulum - Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. Computer!SimulationLab:Building!anAtom!!!!!CLASS!Set!! CLASS!SET!9!Do!not!write!on!or!take. In order to model the motion of an object (like a mass on the end of a string), you need to find all the forces on that object. Martin Brokate Prufer der Dissertation: 1. PhET are interactive simulations covering topics in physics, chemistry, math, biology, environmental sciences etc. amplitude of the pendulum's swing is the displacement from the equilibrium. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. A triple pendulum robotic model and a set of simple parametric functions for the analysis of the golf swing. This simulation mimics a real pendulum and allows you to adjust the initial position, the mass, and the length of the pendulum. This is appropriate for students in high school through the introductory college level. 7 Vector Addition 13 2. Release on 2006-01-19 by Springer Science & Business Media, this book has 542 page count that include useful information with lovely reading experience. Grandfather clock pendulum simulation (self. You can vary friction and the strength of gravity. The period is the time for one complete oscillation. This energy transformation also holds true for a pendulum, as illustrated in the diagram. The time a pendulum takes to swing back and forth (one cycle) is referred to as one period. Design of the simulated environment of Pendulum. Physics of the. 20th IFAC World Congress - Ke Xu, Julia Timmermann, Ansgar Trächtler. Students complete activities to model a pendulum, design and implement a state-feedback controller to balance the pendulum in the upright position, and design and implement a controller to swing up the pendulum. doc), PDF File (. It models a child on a swing suspended from a stationary point. Start the simulation. The single plane pendulum, a simpler case, has a single particle hanging from a rigid rod. Gaeilge Irish. The nonlinear simulation in Simulink produces identical swing-up and cart position tracking results compared to the MATLAB simulation. They also help the students to co-relate the topics with real-life examples. You can put a weight on the end of a hanging spring, stretch the spring, and watch the resulting motion. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. !!Available!online! ! 4. It's easy to measure the period using the photogate timer. Start the timer – Count the swings that happen in 60 seconds Calculate the period in of the pendulum Gather data for four more masses, and enter results in the table. 00 kg, friction slider is none, Real time is checked, earth is checked, other tools is checked, photo gate is unchecked. So the independent variable is the size of the swing, and the dependent. A Double Headline Performance at Ultra Miami. Complex Pendulum Jaw Crusher Main Parts theroundrob How to Improve Moving Jaw of Compound Jaw Crusher Moving jaw is the main working part of compound pendulum jaw crusher Jaw Crusher's _ 2013421 Abstract Has the following advantages of compound pendulum jaw crusheranalysis, the overall design, the frame and main parts selecon load. The cart-pendulum system is a typical benchmark problem in the control field. A triple pendulum robotic model and a set of simple parametric functions for the analysis of the golf swing. http://idaho. If you're behind a web filter, please make sure that the domains *. Here is the Phet simulation of interference. Simple Harmonic Motion 1. As a pendulum swings back and forth, its motion can be approximated with Simple Harmonic Motion. This interactive harmonograph simulation was inspired by a Three-Pendulum Rotary Harmonograph, except that here all three pendulums are rotary. The control objectives for the self-erecting inverted pendulum include swinging the pendulum rod into the upright position and then maintain-ing the rod in this position while holding a specified cart position. Join GitHub today. Whether you have laptops, iPads, chromebooks, or BYOD, your favorite PhET sims are always right at your fingertips. In our case, the inverted pendulum system is single-input, multi-output (SIMO). The second GUI, InvertedPendulum, simulates the inverted pendulum system subject to state space control. It's easy to measure the period using the photogate timer. Set the amplitude to 500 and start the pendulum. Observe the energy in the system in real-time, and vary the amount of friction. Pendulums generally swing back and forth in a single plane fixed in space. Double Pendulum. Double Pendulum Golf Swing Technique By Joe White The double pendulum model is a way of looking at the golf swing in terms of the various physical elements in rotation, specifically, the two pendulums attached end to end: the arms and hands, and the golf club itself. Link to sim Link to iFrame Test Matrix Issues to Verify (all should be marked "status:fixed-pending-testing") Please test the following issues and che. html link to open resource. Quantitatively describe how the period of a pendulum depends on these variables. The math behind the simulation is shown below. A rubric for teachers to reflect on the success of an activity using PhET simulations in K12. edu)simulations)sims. The spherical pendulum is a simple pendulum mounted on a pivot so that its motion is not confined to a plane. ) Coil is shorted. For this problem, use the PhET simulation Pendulum Lab. Sliding Mode Control of the Reaction Wheel Pendulum Zhitong Luo, M. In this experiment we are going to find out what effect changing the mass on the end of the string makes. The period of each pendulum is 1 second longer than the previous pendulum. Since 2013 we have been making cross-platform, run-anywhere, programs to help physics students around the world master the big ideas in physics. Two physics simulations: Pendulum-Simple Harmonics: 15 pendulum simple harmonic oscillation demonstration. Make use of sim features and examples. What Effects the period of the Pendulum. In this lab we tested how the length of the string would effect the time of period. The block and bullet, of total mass m+M, then moves as a pendulum and the maximum height it reaches can easily be measured. A Foucault pendulum is often regarded as perhaps the best proof of a rotating Earth. The Pendulum - Introduction to Harmonic Motion PhET Lab Introduction: Old grandfather clocks have large pendulums that swing back and forth to keep time. The time it takes a pendulum to swing back to its original position is called the period of the pendulum. This creates a 60 second cycle where the pendulums move in and out of “harmony”, creating patterns in the swings. The former uses a non-linear controller to swing-up the pendulum, keeping the cart within a limited travel range on the rail. Answer in decimal form. The two fixed points are: 1. PhET simulations can be run online or downloaded for free from the PhET website. Open the Simulation and experiment a bit with the controls. html http://www. This was a problem given in computer graphics lab, which i was supposed to do using graphics. Try to model the movement of a swing and measure the "thrill factor". Exploring the simple pendulum a bit further, we can discover the conditions under which it performs simple harmonic motion, and we can derive an interesting expression for its period. Physics First: Periodic and Simple Harmonic Motion Units. pendulum link. A detailed overview of facilitation strategies to help students work effectively on activities using PhET simulations. Click Here. Learning Goal: To understand how the motion and energetics of a weight attached to a vertical spring depend on the mass, the spring constant, and initial conditions. In this lesson, I want students to work in small groups and use information gathered from hands-on activities to construct explanations for gravitational potential energy. edu/en/simulation/pendulum-lab. It's easy to measure the period using the photogate timer. You can vary friction and the strength of gravity. The period of a simple pendulum undergoing simple harmonic motion is $T=2\pi\sqrt{\frac{l}{g}}$ Notice that the period does not depend on the mass of the pendulum. If it was at all practical to use a Helix and In Ears I would. @ariel-phet, @arouinfar, @kathy-phet, Pendulum Lab 1. Answer in decimal form. The book is one of best science book, you can find The Pendulum book with ISBN 9781402035265. Control knowledge for this swing up operation is generated by applying a multi-stage decision process called Differential Dynamic Programming (DDP). 00 Vat Series 65. Vat Pendulum Gate Valve 65048-ph52-bmk1 Test Working Conditions Free Ship French Louis Xvi - $3,400. When displaced to a small initial angle and released, the mass will swing back and forth in periodic motion. A directory of useful objects found on the web for teaching Maths. Simulation #1 The pendulum is given a push to start its motion. Hi everyone, I need a little bit of help building two objects and merging them into one whole object, if it is even possible. "Collision to Oscillation" Problem - You will need to look for this title down the page. The simulated pendulum is frictionless, so it will attain the same amplitude in every swing. For this problem, use the PhET simulation Pendulum Lab. Try to model the movement of a swing and measure the "thrill factor". Control knowledge for this swing up operation is generated by applying a multi-stage decision process called Differential Dynamic Programming (DDP). Students will get hands-on experience designing models and control systems for an inertial disc and pendulum, giving students a fundamental background in the theory and experimentation of controlling a system. Lab - PhET Simulations Momentum and Simple 1D Collisions. In this example, one cycle (full swing) takes 2 seconds, so the period, T=2 s, and the frequency, f = 1/T = 1/2 Hz. Simple Double Pendulum: Mount one of the end bearings of the long pendulum onto the support rod or dowel attached to the stand. · The bob of the pendulum was displaced with a small angle · The amplitude of the oscillation of a simple. It is shown that models range in complexity from the conventional double pendulum model to full‐body simulations that include sub‐models. The precession of a Foucault pendulum is easy enough to understand if the pendulum is suspended at one of the Earth's poles, because in this case the point of suspension is not accelerating (to a good approximation). Tree Michelle Designs Pendulum Decor Swing Clock Koala Allen New Eucalyptus Wall New Michelle Allen Designs Wall Clock Decor Koala Swing Pendulum Eucalyptus Tree$58. For the purposes of this experiment, you will need to ensure that your simple pendulum swings in a vertical plane. The configuration of the system is in (S 2) n ×R 2. Molecular Workbench is the product of the Concord Consortium — a nonprofit educational research and development organization based in Concord, Massachusetts, and Emeryville, California. This swinging is due to the force of gravity. For this problem, use the PhET simulation Pendulum Lab. The Simulation and Analysis of a Single and Double Inverted Pendulum with a Vertically-Driven Pivot. 03 - phet-downloads. These labs provide examples of using very open-ended questions to guide students in exploring a simulation and designing their own experiments. You can watch the pendulum swing as an ideal system or add friction and see it gradually slow down. How to analyze a pendulum in swing. Spend some time learning about pendulums. They also help the students to co-relate the topics with real-life examples. Pull one pendulum toward you a short distance and let go. edu) Be sure the setting on side bar are as follows: Mass slider is at 1. The period is the time it takes to complete one whole swing while. The reason for the pendulum analogy is because there is very little movement at your wrists with chip shots and putting. It's easy to measure the period using the photogate timer. Swing, Pendulum, Swing Physics Projects,Astronomy Science Fair Projects for Physics, Physics Project Ideas,Physics Experiments, cbse high school physics projects, college physics projects, cool physics projects for Kids and also for Middle school, Elementary School for class 5th Grade,6th,7th,8th,9th 10th,11th, 12th Grade and High School , MSC and College Students. The simulation makes the students understand the concept and exploring the topic. Release on 2006-01-19 by Springer Science & Business Media, this book has 542 page count that include useful information with lovely reading experience. This type of animation is always a reaction to a primary (character) animation, and are called secondary animations or motion simulations. Find GIFs with the latest and newest hashtags! Search, discover and share your favorite Double Pendulum GIFs. Here is the link for SBAC practice. Design an experiment and test your design using Moon and Jupiter. This swinging is due to the force of gravity. The outer 2 segments of the compound pendulum lag behind the rigid pendulum. The Pendulum Introduction to Harmonic motion phet lab. Licensing. Observe the energy in the system in real-time, and vary the amount of friction. When a pendulum is displaced sideways from. Whether you have laptops, iPads, chromebooks, or BYOD, your favorite PhET sims are always right at your fingertips. Each of these frames or figures will be saved with the name format as 'image00000. French Empire Pendulum Mantel Clock Ormolu In Bronze 1810 Ca. Rstad Side 1 av 4 Simple Pendulum Investigation of gravity and restori ng force Aim To determine acceleration due to gravity by measuring the time period of a simple pendulum. PhET Simulation: Pendulum Lab This updated, mobile-ready PhET simulation provides an array of tools for analyzing energy transformation in a pendulum system. There are other types of harmonographs, but this 3-pendulum rotary type gives a wide. http://phet. This involves the estimation of uncertainties in measurement and in the values of quantities derived from them. A full back and forth pendulum swing. 00 Vat Series 65. Change the mass and length and watch the results. The reason for the pendulum analogy is because there is very little movement at your wrists with chip shots and putting. E the trajectory that the pendulum swings from one Simulation result of pendulum angular. It also has either an adjustable weight that can be moved up and down the bar, or one adjustable pivot, to adjust the periods of swing. On computers in room go to PHET, click on play with sims, physics, motion, pendulum lab (If not in J-18 go to web site www. This paper presents the modelling and simulation for optimal control design of nonlinear inverted pendulum-cart dynamic system using Proportional-Integral-Derivative (PID) controller and Linear Quadratic Regulator (LQR). A rubric for teachers to reflect on the success of an activity using PhET simulations in K12. Click on the button on the lower right which will activate the photogate timer. In this lab we tested how the length of the string would effect the time of period. In this example, one cycle (full swing) takes 2 seconds, so the period, T=2 s, and the frequency, f = 1/T = 1/2 Hz. Energy Skate Park Basics. How does the change in the length of the string affect the period of the pendulum swing?. We’ve looked at the chaotic dynamics of double pendulums, but let’s take a moment to step back at the double pendulum’s simpler sibling, the single pendulum. Examples of this type of motion are sea waves, pendulums and springs. Position" to show the Potential Energy (PE), Kinetic. mali is an rising african market and a lot of customers need crusher and grinding mill from cme every year. Unlike the angle measure and the length of the string, the mass on the pendulum does not affect the swing. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the …. The top of each swing is referred to as maximum displacement or maximum amplitude. Double Pendulum. Use the navigation links above to explore the site. png','image00002. 1 1 We've taken the. Watch the graph to see how the angle of the pendulum changes as it swings back and forth. amplitude of the pendulum’s swing is the displacement from the equilibrium. What Effects the period of the Pendulum. Here is the Phet simulation of interference. This HTML5 app demonstrates the variation of elongation, velocity, tangential acceleration, force and energy during the oscillation of a pendulum (assumed with no friction). For small oscillations the simple pendulum has linear behavior meaning that its equation of motion can be characterized by a linear equation (no squared terms or sine or cosine terms), but for larger oscillations the it becomes very non. Grandfather clock pendulum simulation (self. By measuring the height of the pendulum's swing, the potential energy of the pendulum when it stops can be measured. In order to model the motion of an object (like a mass on the end of a string), you need to find all the forces on that object. Swings give you a feeling of flying in a controlled manner. a pendulum takes to swing back and forth through small distances depends only on the length of the pendulum The time of this to and fro motion, called the period, does not depend on the mass of the pendulum or on the size of the arc through which it swings. When given an initial push, it swings back and forth at a constant amplitude. Place two pieces of tape on the wall/other surface that are 50 cm apart with your weight in the middle. Use the navigation links above to explore the site. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the swing. Triple Peundulum: When all 3 pieces are allowed to swing from pivoting bearings, the system becomes a triple pendulum. After solving the diffrential equation, the code will generate multiple frames of position of pendulum corresponding to each time instant in the array 't'. Its focus is on physics but is has links to Math and other science material created by J Croom. Pendulum; Description. Thus, the force of tension does not do work upon the bob. Watch the pendulum swing as an ideal system or add friction and see it gradually slow down. They also help the students to co-relate the topics with real-life examples. Then use the controls to help you answer the following questions. Start the photogate timer - this will automatically stop itself when it has recorded the. Describe the relative amounts of Kinetic & Potential Energy while you are holding the mass: 6. Using the "Pendulum Lab" PhET Simulation. org are unblocked. Screen recording of PhET Simple Pendulum simulation - length versus period. The effect of weaker gravity is that the period gets longer (it takes more time for the pendulum to complete one swing): so a pendulum on the moon would run slower than a pendulum on the earth as gravity is stronger on earth. Name: _____ Period: _____ Phet Online Simulation Activity Energy in a Spring Pendulum Instructions: Open Phet folder on computer (search “phet” in start menu) and open the ‘Masses and Springs’ simulation – or – go to Phet. SimMechanics is used to simulate a pendulum at the tip of a rotating arm, called a furuta pendulum. lab report investigating a simple pendulum. which gives the equation for the angular acceleration. Answer in decimal form. Note: The pendulum support system must be braced so that it will not move as the pendulum swings back and forth. The physical value of gravity on Earth can be calculated using the relationship between the length and period of swing for a pendulum and some simple mathematics. 1 ORDERS OF MAGNITUDE None for this lab assignment. Simple Harmonic Motion (SHM). ﻿Simple Pendulum PURPOSE The purpose of this experiment is to study how the period of a pendulum depends on length, mass, and amplitude of the swing. Chemistry Unit Test Rework. Click and drag the pendulum to about 35 degrees to start the motion. Describe the transformation of energy as a pendulum swings. You can vary friction and the strength of gravity. In the present study, in order to clarify the fundamental concept, the subspace control method is formulated for swing-up and stabilizing controls of an inverted pendulum system. A ball will be fired into the box and the box will swing back to a certain angle. http://idaho. Equilibrium is the lowest point of the arc. This simulation mimics a real pendulum and allows you to adjust the initial position, the mass, and the length of the pendulum. Chapter 12. pendulum link. pdf : Big Pendulum Wave - YouTube; Small Pendulum Wave - YouTube; Large Amplitude Pendulums; Bat MOI; Bat. A rubric for teachers to reflect on the success of an activity using PhET simulations in K12. Golf Golf & More Golf. from the equilibrium. In this example, one cycle (full swing) takes 2 seconds, so the period, T=2 s, and the frequency, f = 1/T = 1/2 Hz. The state constraints are softened by introducing a slack variable s\geq 0 with a quadratic penalty on s. A rubric for teachers to reflect on the success of an activity using PhET simulations in K12. Describe the relative amounts of Kinetic & Potential Energy while you are holding the mass: 6. Change the mass and length and watch the results. That is, it will lose no energy to friction (heat). A Double Headline Performance at Ultra Miami. Watch Here. Pendulum Simulation. An online stereo 3D simulation is used for e-learning mechanics and specifically the teaching of spherical pendulum as part of the General Physics course for students in the universities. A playground swing (Figure 1) is an example of a pendulum. Report your value, and how you determined it, for 10 extra credit points Expert Answer 100% (1 rating). Record this time on your student worksheet. Describe the effect of friction on the potential, kinetic and total energy of the pendulum. Screen recording of PhET Simple Pendulum simulation - length versus period. Construct and interpret potential energy diagrams for endothermic and exothermic chemical reactions, and for rising or falling objects. Our partners will collect data and use cookies for ad personalization and measurement. When the pendulum is hanging down from its pivot point. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the swing. 6 Estimation 10 1. And so the pendulum swings again in the 2017 Formula 1 season. Your full swing is different because you have to allow for hinging your wrists. When you are done just release the mouse. Change the mass and. Therefore, for the state-space section of the Inverted Pendulum example, we will attempt to control both the pendulum's angle and the cart's position. SIMULATION Use the PhET simulation to try to provide some modelling evidence to determine how the length of a pendulum (swing) determines the thrill of the rider. PhET simulations can be run online or downloaded for free from the PhET website. Vat Pendulum Gate Valve 65048-ph52-bmk1 Test Working Conditions Free Ship French Louis Xvi - \$3,400. Describe the transformation of energy as a pendulum swings. To give you some experience with the pendulum, go to the PhET simulation Pendulum lab to perform a few tasks. ‪Pendulum Lab‬. The estimates suggest that Boris Johnson has about a 1 in 4 chance of securing the majority (of 326 seats or more) that he needs to deliver his Brexit deal. The Intelligent Controller is designed to steer the Inverted Pendulum from the downward resting position or state, to a state controllable by an existing OS based controller. Click https://phet. Simulate the double pendulum and record its position at time t. Here is the link for SBAC practice. The number of people accessing the page since then is:. Between multiple trials in the Lab screen using the period timer, the length of the period should be the same each time if conditions are not changed. Depending on the relevant parameters. Sliding Mode Control of the Reaction Wheel Pendulum Zhitong Luo, M. Read and learn for free about the following article: Oscillation amplitude and period If you're seeing this message, it means we're having trouble loading external resources on our website. We’ve looked at the chaotic dynamics of double pendulums, but let’s take a moment to step back at the double pendulum’s simpler sibling, the single pendulum. The swing is supported by chains that are attached to fixed points at the top of the swing set. The "Reset" button brings the body of pendulum to its initial position. Pendulum - Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. In case of the swing-up control, vd is equal to the potential energy of the pendulum at the upward vertical. Unit 9 My Agenda Unit 9 Resources Unit 9 Objective Check Unit 9 Study Map (due as enter test) Unit 9 Misconceptions Unit 9 Definitions (Freyer Model due 2/14) Unit 9 Text Book Content Pages. Watch the graph to see how the angle of the pendulum changes as it swings back and forth. The pendulum was allowed to swing through 4-6 oscillations. French Empire Pendulum Mantel Clock Ormolu In Bronze 1810 Ca. Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. Balloons and Static Electricity:. We begin by defining the displacement to be the arc length s s size 12{s} {}. A Foucault pendulum is a huge pendulum that swings in two axes as the earth rotates to also keep time T 2 The time a pendulum takes to swing back and forth (one cycle) is referred to as one period. Chapter: 3 Official book website: http://natureofcode. These parameters are determined by performing simulations. This swinging is due to the force of gravity. Stabilization and tracking control problems of the nonlinear uncertain underactuated systems are difficult to be dealt with because of their fewer independent control. Our "amplitude" parameter is set to 50, so the rotation of the pendulum varies from -50 degrees to +50 degrees and our "freq" parameter is set to 1. The aim of this activity is to find out which of the following 3 variables affect the period of a pendulum: mass of the bob, length of the string and frictional force. It's easy to measure the period using the photogate timer. 31–34 However, input-shaping control methods cannot eliminate external disturbances. Spend some time learning about pendulums. You can vary the mass of the pendulum bob, the length of the pendulum, the angle to which you pull the pendulum back, and the gravitational field strength. After solving the diffrential equation, the code will generate multiple frames of position of pendulum corresponding to each time instant in the array 't'. http://phet. The basic idea stems from the analysis of motions in sports. Also, a push (impulse disturbance dF) is applied to the inverted pendulum at a time of 20 seconds. The company has offices in Poland, Sweden and USA, and sales representatives in approximately 100 countries plus service centers in several countries. which gives the equation for the angular acceleration. You can vary friction and the strength of gravity. pendulum-lab 2. The site covers all aspects of Lab Physics, Physics 1, Physics 2, AP Physics. A pendulum is an object, hung from a fixed point, that swings freely back and forth under the action of gravity. The Simulation and Analysis of a Single and Double Inverted Pendulum with a Vertically-Driven Pivot. Procedure: Click the link to open the simulator I. Now hang the 250g mass from spring 1. org/training-tests/. Triple Peundulum: When all 3 pieces are allowed to swing from pivoting bearings, the system becomes a triple pendulum. Anti-swing control for a double-pendulum-type overhead crane via parallel distributed fuzzy LQR controller combined with genetic fuzzy rule set selection Abstract: Overhead crane is an industrial structure that used widely in many harbors and factories. These two equilibrium points are called fixed points in chaotic dynamics. Set the initial height of a pendulum and observe how potential, kinetic, and thermal energy change during swings. Sliding Mode Control of the Reaction Wheel Pendulum Zhitong Luo, M. Pendulum Lab: Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. Once the pendulum is at position 3, there is only kinetic energy, as we see a change in position. If it doesn't work out-of-the-box on your computer or browser, more information and download instructions (and a lot more great simulations) are here.