The EJS Angular Acceleration of a Contracting System model shows a mass and pulley system to illustrate what happens when a rotating system contracts. When the centripetal force has contracted a rotating system to half its initial radius then: (1) The tangential velocity has doubled, (2) The angular velocity is 4 times faster, (3) The rotational kinetic energy is 4 times higher. (4) The required centripetal force is 8 times stronger.

You can examine and 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.

The Angular Acceleration of a Contracting System 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_nl_teunissen_angular_acceleration.jar file will run the program if Java is installed.

Additional information about this model can be found by visiting the author's web site: http://www.cleonis.nl/index.htm.

Please note that this resource requires
at least version 1.5 of
Java (JRE).

Angular acceleration of a Contracting System Source Code
The source code zip archive contains an XML representation of the Angular acceleration of a Contracting System model. Unzip this archive in your Ejs… more... download 18kb .zip
Last Modified: November 3, 2009

<a href="http://www.compadre.org/OSP/items/detail.cfm?ID=9608">Teunissen, Cleon. "Angular acceleration of a Contracting System Model." Version 1.0.</a>

C. Teunissen, Computer Program ANGULAR ACCELERATION OF A CONTRACTING SYSTEM MODEL, Version 1.0 (2009), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391).

C. Teunissen, Computer Program ANGULAR ACCELERATION OF A CONTRACTING SYSTEM MODEL, Version 1.0 (2009), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391>.

Teunissen, C. (2009). Angular acceleration of a Contracting System Model (Version 1.0) [Computer software]. Retrieved December 21, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391

Teunissen, Cleon. "Angular acceleration of a Contracting System Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391 (accessed 21 December 2014).

%A Cleon Teunissen %T Angular acceleration of a Contracting System Model %D January 19, 2009 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391 %O 1.0 %O application/java

%0 Computer Program %A Teunissen, Cleon %D January 19, 2009 %T Angular acceleration of a Contracting System Model %7 1.0 %8 January 19, 2009 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9608&DocID=1391

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The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Angular acceleration of a Contracting System Model.