The Truss Analysis Program

What it teaches:

How it works: There are three steps:


 



Here is a screen shot showing the equations that are displayed if you click on joint 9 or joint 7 (the forces right = the forces left, and the forces up = the forces down).


Here is a screen shot of all of the equations assembled into an augmented matrix.




Here is a listing of the forces (the solution of the system of equations). The load that was placed at the middle of the span was 1000. Notice that:

Some ideas for teachers:

 

Where to now?