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written by Fu-Kwun Hwang and Loo Kang Wee
Newton's cradle, named after Sir Isaac Newton, is a device that demonstrates conservation of momentum and energy via a series of swinging spheres.

A typical Newton's cradle consists of a series of identically sized metal balls suspended in a metal frame so that they are just NOT touching each other at rest. Each ball is attached to the frame by two wires of equal length angled away from each other. This restricts the pendulums' movements to the same plane.

Please note that this resource requires Java Applet Plug-in.
1 source code document is available
Subjects Levels Resource Types
Classical Mechanics
- Linear Momentum
= Collisions in One Dimension
= Conservation of Linear Momentum
- Motion in Two Dimensions
- Newton's Third Law
= Action/Reaction
- Rotational Dynamics
= Conservation of Angular Momentum
- Work and Energy
= Conservation of Energy
= Work
Education Practices
- Instructional Material Design
= Activity
= Demonstration
= Simulation
- Technology
= Computers
- Lower Undergraduate
- Middle School
- High School
- Graduate/Professional
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
= Laboratory
= Simulation
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- application/java
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© 2011 Fu-Kwun Hwang & Loo Kang WEE
This work is released under a Creative Commons Attribution 2.5 Taiwan License.
Record Creator:
Metadata instance created July 26, 2011 by wee lookang
Record Updated:
July 26, 2011 by Lyle Barbato
Last Update
when Cataloged:
May 17, 2011
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to download the jar file please visit

Author: lookang
Posted: July 26, 2011 at 9:36PM
Source: The Open Source Physics collection

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ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
F. Hwang and L. Wee, Computer Program NEWTON'S CRADLE APPLET (2011), WWW Document, (
F. Hwang and L. Wee, Computer Program NEWTON'S CRADLE APPLET (2011), <>.
APA Format
Hwang, F., & Wee, L. (2011). Newton's Cradle Applet [Computer software]. Retrieved May 25, 2017, from
Chicago Format
Hwang, Fu-Kwun, and Loo Kang Wee. "Newton's Cradle Applet." (accessed 25 May 2017).
MLA Format
Hwang, Fu-Kwun, and Loo Kang Wee. Newton's Cradle Applet. Computer software. 2011. Java Applet Plug-in. 25 May 2017 <>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang and Loo Kang Wee", Title = {Newton's Cradle Applet}, Month = {May}, Year = {2011} }
Refer Export Format

%A Fu-Kwun Hwang
%A Loo Kang Wee
%T Newton's Cradle Applet
%D May 17, 2011
%O application/java

EndNote Export Format

%0 Computer Program
%A Hwang, Fu-Kwun
%A Wee, Loo Kang
%D May 17, 2011
%T Newton's Cradle Applet
%8 May 17, 2011

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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 Electronic References.

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Newton's Cradle Applet:

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 Newton's Cradle Applet.

relation by Wolfgang Christian
Is Referenced By Open Source Physics Simulations by Lookang Blog Post

This blog post contains a write-up and set of animated gifs for this applet. Similar information is available from wikipedia and wikimedia commons.

relation by Lyle Barbato

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