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written by Fu-Kwun Hwang
This applet illustrates the effect of frictional forces on the motion of masses. In this experiment, two masses, resting one on top of the other, are pulled by a hanging mass connected by an ideal rope.  Masses and friction can be changed. Different force vectors are color-coded.

Please note that this resource requires Java.
Subjects Levels Resource Types
Classical Mechanics
- Applications of Newton's Laws
- Newton's Second Law
- Newton's Third Law
- Lower Undergraduate
- High School
- Instructional Material
= Interactive Simulation
= Tutorial
Intended Users Formats Ratings
- Learners
- application/java
- image/gif
- text/html
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Access Rights:
Free access
© 1999 Fu-Kwun Hwang
free body diagram, friction, pulley
Record Creator:
Metadata instance created August 4, 2004 by Stephanie Tchatchoua
Record Updated:
January 22, 2011 by Lyle Barbato
Last Update
when Cataloged:
November 11, 1999
Other Collections:

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Record Link
AIP Format
F. Hwang, (1999), WWW Document, (
F. Hwang, NTNU Java: Frictional force (1999), <>.
APA Format
Hwang, F. (1999, November 11). NTNU Java: Frictional force. Retrieved April 22, 2024, from
Chicago Format
Hwang, Fu-Kwun. NTNU Java: Frictional force. November 11, 1999. (accessed 22 April 2024).
MLA Format
Hwang, Fu-Kwun. NTNU Java: Frictional force. 1999. 11 Nov. 1999. 22 Apr. 2024 <>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang", Title = {NTNU Java: Frictional force}, Volume = {2024}, Number = {22 April 2024}, Month = {November 11, 1999}, Year = {1999} }
Refer Export Format

%A Fu-Kwun Hwang %T NTNU Java: Frictional force %D November 11, 1999 %U %O application/java

EndNote Export Format

%0 Electronic Source %A Hwang, Fu-Kwun %D November 11, 1999 %T NTNU Java: Frictional force %V 2024 %N 22 April 2024 %8 November 11, 1999 %9 application/java %U

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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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