PENDULUM
               An Educational Shareware Program

PENDULUM is an educational program for physics students at the
Senior-High and Junior-College levels or for anybody interested
in learning more about mechanical systems while having fun.

This is one of the very few programs that provides a realistic
computer simulations of a simple mechanical device and perhaps the
only one that allows you to perform actual experiments. You move the
pendulum suspension point with the mouse or with the arrow keys and
you get a good feeling of how real pendulums react. You do
experiments by measuring the pendulum period and length and you learn
and check the pendulum formulas. The program provides you with an
accurate stop watch and you can practice how to perform careful
measurements. The program checks the results and gives hints.

You can vary the mass, the length and the amplitude and the friction
of the pendulum and even gravity itself. By seeing what happens under
unusual circumstances you gain new insights and you get an intuitive
understanding of how it all works. Find out how a pendulum would
behave on the moon or even what would happen if gravity could become
negative!

Several amusing practical application problems can be selected, which
require measurements and calculations. The results are checked by the
program. Each time an application is rerun, different values are
chosen by the computer to avoid repetitions. There is also another
section of assignments where you are stimulated to develop and test
your knowledge of mechanical concepts and equations. Also here an
almost infinite number of interesting problems is automatically
generated and you are given the choice of four progressive levels of
difficulty. These problems can be solved "on line" while the computer
helps you with hints and checks your answers, or they can be used by
instructors to generate assignments or tests to be given in class.

In other sections of PENDULUM, novel "moving" graphs and vector
diagrams show dynamically the relationship between the different
variables such as positions, velocities, energies, acceleration etc.
You gain an entirely new understanding which can never be entirely
conveyed by the static diagrams you find in books. You can stop the
action whenever you like and read, compare and study all the values. 
These moving diagrams are another significant breakthrough in the
utilization of computers as powerful teaching and learning aids.

The files found on unregistered diskettes include a manual with all
the necessary instruction. An expanded printed manual, containing
additional information and a section for instructors, is delivered
when you purchase a registered copy. Yo will also receive free
technical assistance for 6 months and notices about future upgrades
and about new programs. To order your registered copy use the
registration form made available when running the unregistered copy.

Further information can be obtained by writing to:

Peter Thieberger
15 Seeley St.
Brookhaven NY, 11719

or by sending CompuServe EMAIL to  72371,312