Engineering Mechanics

The main objective of a basic course in Engineering Mechanics is to enable the student to understand and analyse the actions and reactions of bodies at rest or in motion. For this a thorough understanding of the underlying physics is necessary, along with the ability to solve problems in a simple and logical manner. The contents of this book have been developed keeping this in mind. A good number of multiple-choice questions, short-answer questions, descriptive questions and numerical problems have been included in each chapter along with their solutions so that students are exposed to a variety of situations that will test their understanding of the subject both at the conceptual and analytical levels. The book, apart from catering to the needs of undergraduate engineering students, will also be a ready reference for those appearing for various competitive examinations in India. Preface / FORCES AND MOMENTS - Introduction; Scalars, Vectors and Tensors; Fundamental Concepts and Operations; System of Forces; Moment of a force; Equilibrium of force systems; Analysis of spatial force systems; Action, reaction and free-body diagram / FRICTION - Introduction; Theory of friction; General concepts of friction; Law of friction; Analysis of friction of wedges; Belt friction; Transmission of power through belt drives; Transmission of power through rope and V-Belt drives; Centrifugal tension; Initial tension in the belt; Computation of power transmitted by belt and rope drives; Lifting machines; Principle of a screw jack; Pulley systems; Other lifting machines / CENTER OF GRAVITY AND MOMENT OF INERTIA - Introduction; Center of gravity of body; Location of centroids; Theorems of Pappus and Guldinus; Centroids of a standard geometric configurations; Area moment of inertia; Area moment of inertia of standard geometric configurations; Mass moment of inertia / KINEMATICS - Introduction; Rectilinear motion; Graphical representation; Motion with uniform acceleration; Motion with variable acceleration; Curvilinear motion; Position vector, velocity and acceleration; Components of motion; Circular motion; Projectiles; Motion of a body projected with an inclination; Motion of a body projected horizontally; Motion of a projectile up or down an inclined plane; Kinematics of a rigid body; Instantaneous center in special cases / KINEMATICS - Introduction; Kinematics of a particle; Motion in curved path; Work and power; Principle of conservation of energy; Principle of work-energy of a particle; Kinematics of a rigid body; Principle of work-energy for a rigid body; Impulse and momentum; Angular momentum; Rotator motion; Collision of bodies / ADDITIONAL TOPICS IN DYNAMICS - Introduction; Simple Harmonic Motion (SHM); Definition of SHM; Important relation of SHM; Mechanical vibrations; Pendulum motion; Simple pendulum; Compound pendulum; Torsion pendulum; Theory of virtual work; Application of the principle of virtual work / Index The main objective of a basic course in Engineering Mechanics is to enable the student to understand and analyse the actions and reactions of bodies at rest or in motion. For this a thorough understanding of the underlying physics is necessary, along with the ability to solve problems in a simple and logical manner. The contents of this book have been developed keeping this in mind. A good number of multiple-choice questions, short-answer questions, descriptive questions and numerical problems have been included in each chapter along with their solutions so that students are exposed to a variety of situations that will test their understanding of the subject both at the conceptual and analytical levels. The book, apart from catering to the needs of undergraduate engineering students, will also be a ready reference for those appearing for various competitive examinations in India. Preface / FORCES AND MOMENTS - Introduction; Scalars, Vectors and Tensors; Fundamental Concepts and Operations; System of Forces; Moment of a force; Equilibrium of force systems; Analysis of spatial force systems; Action, reaction and free-body diagram / FRICTION - Introduction; Theory of friction; General concepts of friction; Law of friction; Analysis of friction of wedges; Belt friction; Transmission of power through belt drives; Transmission of power through rope and V-Belt drives; Centrifugal tension; Initial tension in the belt; Computation of power transmitted by belt and rope drives; Lifting machines; Principle of a screw jack; Pulley systems; Other lifting machines / CENTER OF GRAVITY AND MOMENT OF INERTIA - Introduction; Center of gravity of body; Location of centroids; Theorems of Pappus and Guldinus; Centroids of a standard geometric configurations; Area moment of inertia; Area moment of inertia of standard geometric configurations; Mass moment of inertia / KINEMATICS - Introduction; Rectilinear motion; Graphical representation; Motion with uniform acceleration; Motion with variable acceleration; Curvilinear motion; Position vector, velocity and acceleration; Components of motion; Circular motion; Projectiles; Motion of a body projected with an inclination; Motion of a body projected horizontally; Motion of a projectile up or down an inclined plane; Kinematics of a rigid body; Instantaneous center in special cases / KINEMATICS - Introduction; Kinematics of a particle; Motion in curved path; Work and power; Principle of conservation of energy; Principle of work-energy of a particle; Kinematics of a rigid body; Principle of work-energy for a rigid body; Impulse and momentum; Angular momentum; Rotator motion; Collision of bodies / ADDITIONAL TOPICS IN DYNAMICS - Introduction; Simple Harmonic Motion (SHM); Definition of SHM; Important relation of SHM; Mechanical vibrations; Pendulum motion; Simple pendulum; Compound pendulum; Torsion pendulum; Theory of virtual work; Application of the principle of virtual work / Index

M V Seshagiri Rao is a professor heading the Civil Engineering Department, Jawaharlal Nehru Technological University (JNTU) College of Engineering, Hyderabad. He has postgraduate degrees in Structural Engineering and Software Systems and has 27 years of experience in the field of teaching, research, construction and consultancy. D Rama Durgaiah is retired professor of Civil Engineering from JNTU with 37 years of experience as a teacher, researcher and consultant. His areas of expertise are hydraulics and water resources engineering.