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written by Tom Dooling
The Double Pendulum With Elastic Rods Model shows two massless rods each with a different length. At the end of each rod is mass, m1; and m2. The user can vary the lengths of the rods and values of the masses within the simulation. A velocity dependent resistance can also be added by adjusting a drag variable in the simulation.  In this simulation, the rods are modeled as very stiff springs. If the rod gets longer or shorter than its rest length, a very strong force drives it back to its rest length. The spring constant for each rod is 1.0E+7 N/m. In a sense, this is what happens in a real double pendulum. A real physical rod pulls or pushes back to its rest length under tension or compression. There is also a drag force that is linearly dependent on the velocity vector. The drag constant determines the strength of the drag force. Initially the drag is set to zero.

The Double Pendulum With Elastic Rods Model was developed using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.   Double clicking the jar file will run the program if Java is installed.  You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

Please note that this resource requires at least version 1.6 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Modern Physics
- Chaos & Non-linear Dynamics
Oscillations & Waves
- Oscillations
= Pendula
- Upper Undergraduate
- Lower Undergraduate
- Instructional Material
= Interactive Simulation
= Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
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Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Tom Dooling
Merlot:
pending
Record Cloner:
Metadata instance created January 12, 2013 by Wolfgang Christian
Record Updated:
July 1, 2013 by Bruce Mason
Last Update
when Cataloged:
January 12, 2013
Other Collections:

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Record Link
AIP Format
T. Dooling, Computer Program DOUBLE PENDULUM WITH ELASTIC RODS MODEL (2013), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177).
AJP/PRST-PER
T. Dooling, Computer Program DOUBLE PENDULUM WITH ELASTIC RODS MODEL (2013), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177>.
APA Format
Dooling, T. (2013). Double Pendulum With Elastic Rods Model [Computer software]. Retrieved April 18, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177
Chicago Format
Dooling, Tom. "Double Pendulum With Elastic Rods Model." http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177 (accessed 18 April 2014).
MLA Format
Dooling, Tom. Double Pendulum With Elastic Rods Model. Computer software. 2013. Java (JRE) 1.6. 18 Apr. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177>.
BibTeX Export Format
@misc{ Author = "Tom Dooling", Title = {Double Pendulum With Elastic Rods Model}, Month = {January}, Year = {2013} }
Refer Export Format

%A Tom Dooling
%T Double Pendulum With Elastic Rods Model
%D January 12, 2013
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177
%O application/java

EndNote Export Format

%0 Computer Program
%A Dooling, Tom
%D January 12, 2013
%T Double Pendulum With Elastic Rods Model
%8 January 12, 2013
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12581&DocID=3177


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The AIP Style presented is based on information from the AIP Style Manual.

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Double Pendulum With Elastic Rods Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Double Pendulum With Elastic Rods Model.

relation by Wolfgang Christian

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