Science SPORE Prize
November 2011

The Open Source Physics Project is supported by NSF DUE-0442581.

## Computer Program Detail Page

Bead on a Hyperbolic Tangent Model
written by Thomas Bensky and Matthew J. Moelter
The Bead on a Hyperbolic Tangent model computes the dynamics if a bead constrained to slide on a hyperbolic tangent shaped wire.  The model uses an Euler algorithm to evolve the system and it displays the velocity, acceleration, and normal force vectors as the bead slides along the wire.  Separate graphs show the energy and force components.  The goal of this teaching model is to find the proper acceleration that will guide a particle along an arbitrary single valued function, y=f(x)--in other words, to simulate the classic "bead on a wire." Although there are many methods for doing this, the focus of this work to keep the theory and procedures within the realm of freshman physics. The origins of this work are from an ongoing effort to add computation, in the form of computer animation projects, to the freshman mechanics course.  This work is descdribed in the American Journal of Physics (AJP) publication "Computational problems in introductory physics: lessons from a bead on a wire," by T. Bensky and M. Moelter.

The Bead on a Hyperbolic Tangent 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.

Please note that this resource requires at least version 1.6 of Java.
1 source code document is available
Subjects Levels Resource Types
Classical Mechanics
- Applications of Newton's Laws
= Friction
- General
- Motion in One Dimension
- Motion in Two Dimensions
= 2D Acceleration
- Newton's Second Law
= Force, Acceleration
General Physics
- Curriculum
Mathematical Tools
- Differential Equations
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
• Currently 0.0/5

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Access Rights:
Free access
Program released under GNU-GPL. Narrative is copyrighted.
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Thomas J. Bensky and Matthew J. Moelter
Keyword:
constrained motion
Record Cloner:
Metadata instance created December 17, 2012 by Wolfgang Christian
Record Updated:
June 2, 2014 by Andreu Glasmann
Last Update
when Cataloged:
December 17, 2012

### AAAS Benchmark Alignments (2008 Version)

#### 4. The Physical Setting

4E. Energy Transformations
• 6-8: 4E/M4. Energy appears in different forms and can be transformed within a system. Motion energy is associated with the speed of an object. Thermal energy is associated with the temperature of an object. Gravitational energy is associated with the height of an object above a reference point. Elastic energy is associated with the stretching or compressing of an elastic object. Chemical energy is associated with the composition of a substance. Electrical energy is associated with an electric current in a circuit. Light energy is associated with the frequency of electromagnetic waves.

### AAAS Benchmark Alignments (1993 Version)

#### 4. THE PHYSICAL SETTING

E. Energy Transformations
• 4E (9-12) #2.  Heat energy in a material consists of the disordered motions of its atoms or molecules. In any interactions of atoms or molecules, the statistical odds are that they will end up with less order than they began?that is, with the heat energy spread out more evenly. With huge numbers of atoms and molecules, the greater disorder is almost certain.
ComPADRE is beta testing Citation Styles!

AIP Format
T. Bensky and M. Moelter, Computer Program BEAD ON A HYPERBOLIC TANGENT MODEL, Version 1.0 (2012), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12531&DocID=3152).
AJP/PRST-PER
T. Bensky and M. Moelter, Computer Program BEAD ON A HYPERBOLIC TANGENT MODEL, Version 1.0 (2012), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12531&DocID=3152>.
APA Format
Bensky, T., & Moelter, M. (2012). Bead on a Hyperbolic Tangent Model (Version 1.0) [Computer software]. Retrieved August 23, 2017, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12531&DocID=3152
Chicago Format
Bensky, Thomas, and Matthew Moelter. "Bead on a Hyperbolic Tangent Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12531&DocID=3152 (accessed 23 August 2017).
MLA Format
Bensky, Thomas, and Matthew Moelter. Bead on a Hyperbolic Tangent Model. Vers. 1.0. Computer software. 2012. Java 1.6. 23 Aug. 2017 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12531&DocID=3152>.
BibTeX Export Format
@misc{ Author = "Thomas Bensky and Matthew Moelter", Title = {Bead on a Hyperbolic Tangent Model}, Month = {December}, Year = {2012} }
Refer Export Format

%A Thomas Bensky
%A Matthew Moelter
%T Bead on a Hyperbolic Tangent Model
%D December 17, 2012
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Bensky, Thomas
%A Moelter, Matthew
%D December 17, 2012
%T Bead on a Hyperbolic Tangent Model
%7 1.0
%8 December 17, 2012

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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 Style.org: Electronic References.

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

### Bead on a Hyperbolic Tangent 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 Bead on a Hyperbolic Tangent Model.

relation by Wolfgang Christian

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