These handwritten notes offer a comprehensive overview of engineering mechanics, focusing on coplanar forces, Varignon’s theorem, and resultant force equations. Delving into the equilibrium of forces within the same plane, the notes explore Varignon’s theorem for calculating moments about any point. Through clear explanations and illustrative examples, students gain insight into determining resultant forces and solving equilibrium problems effectively. From analyzing force systems to understanding the principles of static equilibrium, these notes provide a solid foundation for tackling engineering challenges. Whether preparing for exams or seeking practical solutions, these concise notes serve as a valuable resource for mastering coplanar force systems and equilibrium principles in mechanics.