[2.5] Free Body Diagrams

• FREE BODY DIAGRAM


  A graphical representation used to visualize all forces on a single object.
• COMMON TYPES OF FORCES IN FBD

  1. Normal Force
  2. Frictional Force
  3. Tensional Force
  4. Weight
• NORMAL FORCE


  The support force that surfaces apply to objects. It is always perpendicular to the contact surface.
• FRICTIONAL FORCE


  An opposing force acting on an object. It acts opposite to the direction of motion.
• TENSIONAL FORCE


  A force transmitted through a string, rope, cable, or wire when it is pulled tightly by opposing forces.
• WEIGHT


  The force of gravitational attraction that the earth exerts on objects.
• EQUILIBRIUM


  When the net force on an object is zero.