Pendulum Java Applet by Fu-Kwun Hwang : Physics Cyber Labs

PendulumJava Applet

Your browser can't run 1.0 Java applets, so here's a picture of the window the program brings up:

How to change parameters?

Click and drag the left mouse button

The horizontal position of the pendulum will follow the mouse Animation starts when you release the mouse button

dragging the pointer (while > holding down the left button)

from the support-point

Click near the tip of the red arrow

and drag the mouse button to change it (up-down).

Click near the buttom of the black stick,

and drag the mouse button to change it (up-down).

Information displayed:

K = m v*v /2

U = m g h

Try ro find out the relation between kinetic energy and pontential energy!

will display information for that dot in the textfield

Click show checkbox to show more information

Try to compare velocity and the tangential component of the gravitional force!

The calculation is in real time (use Runge-Kutta 4th order method). The period(T) is calculated when the velocity change direction.

You can produce a period verses angle ( T - X ) curve on the screen,just started at different positions and wait for a few second.

Any suggestions! Please click hwang@phy03.phy.ntnu.edu.twCheck out other physics java applets
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