Free Body Diagram – Free Body Chart – Free Body Graph – Free body diagrams are widely used in Physics to depict various forces acting on an object including Force of Gravity, Normal Force, Applied force, Friction, etc. Often, the forces are acting at an angle. Note that the force of gravity is always downwards facing. Free body diagram is a useful visual depiction of forces acting on a body or an object. Free Body Diagram Diagram - Chart - diagrams and charts with labels. This diagram depicts Free Body Diagram and explains the details of Free Body Diagram.