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written by
Cleon Teunissen *

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.

**Download**- 1893kb Java Archive File*ejs_mech_angular.jar*

Last Modified *June 3, 2014*

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This file has previous versions.
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The source code zip archive contains an XML representation of the Angular acceleration of a Contracting System model. Unzip this archive in your Ejs workspace to compile and run this model using EJS.

**Download**- 18kb Compressed File*ejs_nl_theunissen_angular_acceleration.zip*

Last Modified *November 3, 2009*

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