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written by Wolfgang Christian
The Falling Slinky model approximates a slinky using twenty masses connected with light springs. The slinky is suspended from one end and released.  Two actions will occur simultaneously when it is released hanging at rest from its equilibrium position - it will fall and it will collapse.  What happens to the bottom when it begins its fall?
  1. The bottom end will move up initially.
  2. The bottom end will move down initially.
  3. The bottom end will remain at the same point for a short time before it begins to move.
The Falling Slinky model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double click the ejs_mech_newton_FallingSlinky.jar file to run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java.
View the source code document attached to this resource
  • Falling Slinky Model Source Code
    The source code zip archive contains an XML representation of the Falling Slinky model.   Unzip this archive in your EJS workspace to compile and run this model using EJS.
Subjects Levels Resource Types
Motion, Forces, and Energy
- General
- Motion in One Dimension
= Gravitational Acceleration
= Velocity
- Newton's Second Law
= Force, Acceleration
Waves and Pendula
- Oscillations
= Hooke's Law
- Lower Undergraduate
- Middle School
- High School
- Instructional Material
= Interactive 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. Additional information is available.
Rights Holder: Wolfgang Christian
Keywords: free fall, hooke's law, speed of sound, weightless
Record Cloner: Metadata instance created September 1, 2009 by Wolfgang Christian
Record Updated: Jun 06, 2014 by Andreu Glasmann
Last Update
when Cataloged:
September 1, 2009
Other Collections:
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, Computer Program FALLING SLINKY MODEL, Version 1.0 (2009), WWW Document, (
W. Christian, Computer Program FALLING SLINKY MODEL, Version 1.0 (2009), <>.
APA Format
Christian, W. (2009). Falling Slinky Model (Version 1.0) [Computer software]. Retrieved October 19, 2017, from
Chicago Format
Christian, Wolfgang. "Falling Slinky Model." Version 1.0. (accessed 19 October 2017).
MLA Format
Christian, Wolfgang. Falling Slinky Model. Vers. 1.0. Computer software. 2009. Java 1.5. 19 Oct. 2017 <>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Falling Slinky Model}, Month = {September}, Year = {2009} }
Refer Export Format

%A Wolfgang Christian
%T Falling Slinky Model
%D September 1, 2009
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%D September 1, 2009
%T Falling Slinky Model
%7 1.0
%8 September 1, 2009

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

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

The APA Style presented is based on information from APA Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

Falling Slinky 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 Falling Slinky.

relation by Wolfgang Christian

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