Introduction to Structural Statics and Free-Body Diagrams

Understanding how forces interact and balance is the first critical step in structural engineering and mechanics. Without a solid grasp of static equilibrium, complex structural analysis is impossible. By completing this course, you will be able to systematically isolate structural elements, draw accurate free-body diagrams, and apply the necessary equations of equilibrium to solve for all unknown reaction forces in two dimensions. What you'll learn: * Understand the definitions of force, moment, rigid body, and the fundamental conditions for static equilibrium. * Practice drawing precise free-body diagrams (FBDs) to correctly represent all external and internal forces acting on a system. * Apply the two-dimensional equations of equilibrium (sum of forces and moments) to solve for unknown support reactions. * Analyze common structural supports, including pins, rollers, and fixed connections, and determine their corresponding reaction components. * Develop a systematic, step-by-step problem-solving workflow for consistently solving determinate static problems. The material begins with foundational terminology and concepts before diving into the core techniques of drawing free-body diagrams and setting up equilibrium equations. You will then apply these methods through structured written exercises focusing on common structural elements. This course is designed for absolute beginners in mechanics, civil engineering, or physics. No prior engineering knowledge is required, only basic algebra skills. Start building your core competency in structural analysis today.