written by Wolfgang Christian

The Ball on a Moving Ring mobile JavaScript Model illustrates the forces and dynamics of a ball rolling to a circular track. This simulation uses  the accelerometer on your mobile device to read the proper acceleration as measure by the mobile device. A force body (free body) diagram showing the force of the track (blue), the gravitational force (black), and the force of friction (green) can also be displayed. Users set the initial angle in radians and angular velocity in radians/second and you can adjust the viscous damping (friction) coefficient when the simulation is paused.

The Ball on a Moving Ring mobile JavaScript Model was developed using version 5 of the Easy Java Simulations (EJS 5) modeling tool. Although EJS is a Java program, EJS 5 can be used to create stand-alone JavaScript programs that run in almost any browser.

• Download ejss_model_BallOnMovingRing.zip - 365kb Compressed File

Published October 20, 2016
Last Modified May 5, 2021

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