Forces, moments, (un)equal loads and supports may be applied to the construction. A force may be applied to either a nodal point or a bar. A moment or support may only be applied to a nodal point, whilst (un)equal loads may only be applied to a bar.
Set information on loads are as follows:
• A force has a mass and an angle. A horizontal force to the right
has an angle of 0 degrees.
The division of the angle is to the left, so a left, vertical force downward may be entered under
an angle of 270 degrees or -90 degrees.
• A moment to the left is positive.
