Vector diagrams are used to resolve (break down) a single force into two forces acting at right angles to each other. Free body diagrams A free body diagram models the forces acting on an object.

The free-body diagram method is emphasized. Topics include vector algebra, force, moment of force, couples, static equilibrium of rigid bodies, trusses, friction, properties of areas, shear and moment ...

Show the forces acting on an object in a free body diagram. The arrows represent the size and direction of the forces acting. When drawing a force diagram: ...

Simply put, in a free body diagram, all the forces acting on the given object are represented as arrows. Let me start with a simple case, a box sitting on a table. There are only two forces acting ...