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written by Fu-Kwun Hwang
This webpage contains an applet on circular motion. The simulation portrays a ball on a string swinging in a circle. The radius of the circle can be changed, and conservation of angular momentum can be observed. This applet is by Fu-Kwun Hwang.
Subjects Levels Resource Types
Motion, Forces, and Energy
- Rotational Dynamics
- High School
- Lower Undergraduate
- Instructional Material
= Interactive Simulation
- Reference Material
Intended Users Formats Ratings
- Learners
- application/java
- text/html
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Additional Information
photo credit: Des Burke-Kennedy This resource was a Physics To Go feature from August 1, 2007 until August 16, 2007. View the feature here!

Access Rights: Free access
Restriction: © 2007
Use of application and text may require specific permission.
Keywords: Newton’s second law of motion, centripetal force, circular motion, rotational motion, turning
Record Creator: Metadata instance created July 25, 2007 by Andrew Coughlin
Record Updated: Apr 01, 2011 by Lyle Barbato
Last Update
when Cataloged:
June 12, 2000
Other Collections:

Loading on Waterskiers in the Slalom Course

Author: Des Burke-Kennedy
Posted: August 2, 2007 at 4:48PM

Great to see Irish Waterskier Rodney Watson featured on the Home Page today. Here is an interesting aspect which may be of interest. The Ski Boat passes through the Slalom Course at 36mph / 58kph. The Ski Rope is shortened as the Skier completes each successful pass around six buoys. The distance from the Boat to each bouy is 11.5m When the Ski Rope has been shortened to 14.25m, the Skier picks up a load of 800lbs each time he passes around the six buoys ! Top ranked Slalom Skiers are exceptional athletes. See

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AIP Format
F. Hwang, (2007), WWW Document, (
F. Hwang, Circulation Motion and Centripetal Force (2007), <>.
APA Format
Hwang, F. (2000, June 12). Circulation Motion and Centripetal Force. Retrieved May 22, 2024, from
Chicago Format
Hwang, Fu-Kwun. Circulation Motion and Centripetal Force. June 12, 2000. (accessed 22 May 2024).
MLA Format
Hwang, Fu-Kwun. Circulation Motion and Centripetal Force. 2007. 12 June 2000. 22 May 2024 <>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang", Title = {Circulation Motion and Centripetal Force}, Volume = {2024}, Number = {22 May 2024}, Month = {June 12, 2000}, Year = {2007} }
Refer Export Format

%A Fu-Kwun Hwang %T Circulation Motion and Centripetal Force %D June 12, 2000 %U %O application/java

EndNote Export Format

%0 Electronic Source %A Hwang, Fu-Kwun %D June 12, 2000 %T Circulation Motion and Centripetal Force %V 2024 %N 22 May 2024 %8 June 12, 2000 %9 application/java %U

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