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Computer Program Detail Page

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written by Juan Aguirregabiria
edited by Wolfgang Christian
The Ejs Falling Rod model displays the dynamics of a falling rod which rotates about a pivot point as compared to a falling ball.  The simulation allows computing fall times and trajectories.  The initial angle that the rod falls from and the initial height at which the ball is released can be changed via a slider.  You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.  

Ejs Falling Rod model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_ehu_rigid_bodies_faster.jar file will run the program if Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Ejs models for rigid body dynamics are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Classical Mechanics
- Rotational Dynamics
= Moment of Inertia
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Activity
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Educators
- Professional/Practitioners
- Learners
- application/java
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Access Rights:
Free access
Restriction:
© 2008 Juan M. Aguirregabiria
Additional information is available.
Keywords:
Easy Java Simulatiomns, Ejs, OSP, Open SOurce Physics, falling rod, gravity, moment of inertia, rotational motion
Record Creator:
Metadata instance created August 18, 2008 by Mario Belloni
Record Updated:
June 5, 2014 by Andreu Glasmann
Last Update
when Cataloged:
August 18, 2008

Rod Length and speed

Author: Jorge Vicens
Posted: August 13, 2009 at 11:56PM

Thank you for this simulation. It helped clearing some thoughts I had.
Would it be possible to implement an option to calculate the speed of the free end of the rod as a fuction of the rod's length? Kind of a separate problem...
Jorge

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ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
J. Aguirregabiria, Computer Program EJS FALLING ROD MODEL, Version 1.0 (2008), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652).
AJP/PRST-PER
J. Aguirregabiria, Computer Program EJS FALLING ROD MODEL, Version 1.0 (2008), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652>.
APA Format
Aguirregabiria, J. (2008). Ejs Falling Rod Model (Version 1.0) [Computer software]. Retrieved November 26, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652
Chicago Format
Aguirregabiria, Juan. "Ejs Falling Rod Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652 (accessed 26 November 2014).
MLA Format
Aguirregabiria, Juan. Ejs Falling Rod Model. Vers. 1.0. Computer software. 2008. Java (JRE) 1.5. 26 Nov. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652>.
BibTeX Export Format
@misc{ Author = "Juan Aguirregabiria", Title = {Ejs Falling Rod Model}, Month = {August}, Year = {2008} }
Refer Export Format

%A Juan Aguirregabiria
%T Ejs Falling Rod Model
%E Wolfgang Christian, (ed)
%D August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Aguirregabiria, Juan
%D August 18, 2008
%T Ejs Falling Rod Model
%E Christian, Wolfgang
%7 1.0
%8 August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7869&DocID=652


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

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