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ENGINEERING MECHANICS I
Course Code: ENME 103
Lecture: 3 Year: I
Tutorial: 1 Part: I
Practical: 0

Course Objectives:
To provide the fundamental principles, concepts and applications of mechanics for solving engineering problems. To become familiar with the analytical and graphical methods for solving problems of mechanics, mainly statics.

Forces Acting on Particle (6 hours)

Introduction to mechanics
Scalars, vectors and vector operations
Definitions and concepts of particles, deformable bodies and rigid bodies
Fundamental concepts and principles of mechanics: Newtonian mechanics
Concept of particles and free-body diagrams
Equations of equilibrium in two dimensions
Force in space

Forces Acting on Rigid Body (6 hours)

External and internal forces
Principle of transmissibility and equivalent forces
Resolution of a force into forces and a couple
Resultant force and moment for a system of forces
Equilibrium of two-force and three-force bodies
Equations of equilibrium in three dimensions

Center of Gravity and Centroids (6 hours)

Center of gravity of two-dimensional bodies
Centroids of areas and lines
First moment of area and lines
Determination of centroids by integration and the theorems of Pappus-Guldinus
Center of gravity of three-dimensional bodies
Introduction to composite plates and wires

Moment of Inertia (7 hours)

Moment of inertia of area

Second moment of area
Polar moment of inertia
Radius of gyration
Parallel-axis theorem for area moment of inertia
Moment of inertia of composite areas

Mass moments of inertia

Moment of inertia of a simple mass
Parallel-axis theorem for mass moments of inertia
Moments of inertia of thin plates
Mass moment of inertia of composite bodies

Friction (6 hours)

Laws of friction

Static and dynamic coefficients of friction
Angle of friction

Applications of friction in engineering

Examples involving high-tension friction
Wedges and screws
Belt friction

Friction on axles, disks and wheels

Journal bearings and axle friction
Thrust bearings and disk friction
Wheel friction and rolling resistance

Introduction to Structures: Beams and Frames (8 hours)

Reactions for two-dimensional structures

Rocker/roller supports and short cables/links
Hinges, rough surfaces and frictionless pins
Fixed supports

Types of loading and supports, including examples and standard symbols

Point loads
Uniformly distributed loads
Uniformly varying loads

Concepts of statically and kinematically determinate and indeterminate beams and frames
Relationship between load, axial force, shear force and bending moment

Determinate beams
Determinate frames
Calculation and diagrams of axial force, shear force and bending moment

Analysis of Trusses (6 hours)

Concept of simple trusses, pin joints and joint loads in trusses
Calculation of member forces in trusses using the method of joints
Calculation of member forces in trusses using the method of joints under special loading conditions
Calculation of member forces in trusses using the method of sections
Introductory concepts of machines

Tutorials (15 hours)

Sample problems related to vector operations, free-body diagrams, equilibrium and forces in space
Sample problems related to equivalent forces, resolution of forces, resultant forces and moments, equilibrium of multiple forces, and three-dimensional equilibrium
Sample problems related to centroids of areas and lines, three-dimensional bodies and composite bodies
Sample problems involving the determination of moments of inertia of areas, masses and composite objects using various methods
Sample problems related to coefficients of friction, wedges, screws, belts, journal bearings, thrust bearings, axles, disks and wheels
Sample problems related to statically and kinematically determinate and indeterminate structures, loads, axial forces, shear forces, bending moments and their diagrams in beams and frames
Sample problems related to simple trusses using the methods of joints and sections

Assignments

Tutorial submission
A case study of a real-time problem
Project preparation and demonstration

References

Beer, F. P., and Johnston, E. R. (2024). Vector Mechanics for Engineers: Statics and Dynamics. McGraw-Hill Education.
Hibbeler, R. C. (2022). Engineering Mechanics: Statics and Dynamics. Pearson.
Meriam, J. L., and Kraige, L. G. (2020). Engineering Mechanics: Statics and Dynamics. John Wiley & Sons.
Jong, I. C., and Rogers, B. G. (1991). Engineering Mechanics: Statics and Dynamics. Saunders College Publishing.
Sandor, B. I. (1983). Engineering Mechanics: Statics and Dynamics. Prentice-Hall.
Parajuli, H. R., and Neupane, S. (2022). A Textbook of Applied Mechanics for Engineers. Heritage Publishers and Distributors.

Explore comprehensive Engineering Mechanics I (ENME 103) Notes designed to help engineering students understand the fundamental principles of mechanics and solve practical engineering problems. This foundational subject introduces statics, force systems, equilibrium, and structural analysis, providing essential knowledge for advanced engineering studies. Students searching for IOE Notes, Engineering Notes, Pulchowk campus notes, Aerospace notes, and subject and semester notes can use these study resources to strengthen their concepts and prepare for examinations.

The syllabus covers the analysis of forces acting on particles and rigid bodies, vector operations, free-body diagrams, and equilibrium equations in two and three dimensions. Students can explore centres of gravity, centroids, moments of inertia, the parallel-axis theorem, radius of gyration, and composite bodies. The course also explains friction laws and their engineering applications, including wedges, screws, belt friction, bearings, and rolling resistance.

Further topics include beams, frames, support reactions, different loading conditions, axial forces, shear forces, and bending moment diagrams. Truss analysis using the methods of joints and sections helps students develop essential structural problem-solving skills. Tutorial problems and practical applications reinforce theoretical understanding.

These Engineering Mechanics Notes support systematic revision, numerical problem practice, and semester examination preparation. Whether you need IOE Notes, Pulchowk campus notes, Aerospace notes, or other engineering study materials, these subject-focused resources help build a strong foundation in engineering mechanics.