Shows the dynamics of a charged ball. Charge Falling Through a Charged Ring model shows the dynamics of a charged ball as it is released and falls through a ring of charge. The ball and the ring can be charged with a positive blue) or a (red) negative charge in order to change the interaction.

One can observe several scenarios:
1. The ball is heavy and starts far away from the charged ring. The ring and the ball can be equally or oppositely charged.
2. The ball is light and starts far away from the ring. The ring and the ball can be equally or oppositely charged.
3. Modify the magnitude and sign of charge on the ball and the ring and observe the effects.
4. Position the ball charged below the ring. Set the charge of the ring and the ball so that they are attracted. Observe the resulting movement of the ball.
5. In a certain case it is possible to trap the ball by suitably charging the ring and with suitable initial condition (height) and mass of a ball. Find these situations.

Requirements:
* Java

The license of this software is Free, you can free download and free use this graphing software.