Drag a ball which you want to move. You can make waves. You can change the strength of springs and mass of balls if you drag the right edge of the bars which located in the left under corner. The motion of these balls are limited in the vertical direction.

The motion is calculated by 4th order Runge-Kutta method.

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Noriyoshi Kato

(2003.12.9)

to Japanese page. You can try more Java apprets.