Type f for force details Point to a bead and type f to display the forces acting on the bead. fx and fy are total force the transmitted down from the bead. gx and gy are the partial force from the last-added bead. Red and blue lines show the total forces on the two supporting contacts.

*To make current beads nearly weightless, hit this button 3 or 4 times. Later beads will still have their full weight. By reducing the beads' weight, you can see whether their weight helps stabilize the pile.