Engineering Mechanics | System of Forces | Lecture 3 | Resultant of two forces| Parallelogram Law

Engineering Mechanics – Chapter 1: System of Forces | Lecture 3 – Resultant of Two Forces In this lecture, we learn how to find the resultant of two forces using the Parallelogram Law of Forces and Triangle Law of Forces, followed by step-by-step solved numerical problems. This is an important topic in Engineering Mechanics and forms the foundation for studying resolution and composition of forces, equilibrium, moments and other force-system problems. 📘 Topics covered in Lecture 3: Resultant of Two Forces Composition of Forces Parallelogram Law of Forces Triangle Law of Forces Magnitude of Resultant Force Direction of Resultant Force Angle made by the resultant Vector representation of forces Graphical representation Step-by-step solved numericals Exam-oriented problems For two forces F₁ and F₂ acting at an angle θ: R = √(F₁² + F₂² + 2F₁F₂ cosθ) Direction of the resultant: tan α = (F₂ sinθ)/(F₁ + F₂ cosθ) 🎯 Useful for: First Year B.E./B.Tech students, Diploma Engineering students and candidates preparing for GATE, ESE, SSC JE, RRB JE, State AE/JE and other engineering competitive examinations. 📚 Engineering Mechanics – Chapter 1: System of Forces Series Lecture 1: Force, Characteristics of Force & Graphical Representation Lecture 2: Types of Systems of Forces – Coplanar & Non-Coplanar Forces Lecture 3: Resultant of Two Forces – Parallelogram Law & Triangle Law 🌐 EASY SCIENCE PREP easyscienceprep.com Follow EASY SCIENCE PREP for Engineering Mechanics lectures with clear concepts, diagrams, derivations and step-by-step solved numerical problems. Hashtags: #EngineeringMechanics #ResultantOfForces #ParallelogramLaw #TriangleLawOfForces #SystemOfForces #FirstYearEngineering #SolvedNumericals #EngineeringMechanicsLecture #GATE #ESE #SSCJE #EasySciencePrep Suggested YouTube tags/keywords: engineering mechanics, resultant of two forces, parallelogram law of forces, triangle law of forces, system of forces, engineering mechanics lecture 3, resultant force numericals, first year engineering mechanics, composition of forces, BTech first year, engineering mechanics solved problems, easy science prep