106. Engineering Mechanics
FIRST TERM: 1. INTRODUCTION: Idealisation of Mechanics, concept of Rigid Body. External Forces (Body forces & surface forces). Laws of Mechanics. -2 lects. 2. VECTOR METHODS: Equality aud Equivalence of vectors. Free and Bound vectors. Priniciple of Transmissibility of forces Moment of a force about a point and about a line. Couple and moment of a couple. couple moment as a tree vector. Addition and subtraction of couples -4 lects. 3. VARIOUS SYSTEMS OF FORCES: Statically Equivalent Force systems. Simplest Equivalent of a system of forces. -3 lects. 4. EQUILIBRIUM: Force analysis, Free Body Diagram, Equations of equilibrium and their applications to various system of forces. Plane Trusses. -9 lects. 5. FRICTION: Friction on dry surfaces. Static , kinetic and rolling friction. Applications to inclined planes, wedge and blocks and belts & pulleys. -6 lects. SECOND TERM: 1. KINEMATICS AND KINETICS OF A PARTICLE.. Rectiinear and curvilinear translations. Normal and tangential components of acceleration. Projectile. Motion on a smooth vertical curve. -6 Lects. 2. IMPULSE AND MOMENTUM: Linear Impulse and linear momentum. Central- Impact of elastic, semi-elastic & plastic bodies. - 4 lects. 3. KINEMATICS AND KINETICS OF RIGID BODIES Angular velocity and angular acceleration. Effective Forces on a rigid body. D'Alembert's Principle- Application to Highways and Railway tracks. Instantaneous centre of zero velocity. Compound pendulum. Centre of Percussion. Rotation of Rigid bodies. Rolling motion. Plane motion of rigid bodies. Simple application- Four bar mechanism. -12 lects 4. WORK, ENERGY AND POWER: Work done by forces and couples, Potential,Elastic and kinetic energy, work energy Conservation of energy. Concept of power and efficiency. LABORATORY WORK: About eight experiments based on the theory covered under the subject. Texts / References 1. Engineering Mechanics I.M. Shames 2. Vector Mechanics- (Statics and Dynamics) F.B. Beer & E.R. Johnston 3. Engineering Mechanics- S. Timisheno & T. Yong 4. Engineering Mechanics- Statics Vol-I & Dynamics Vol-Il by V.S. Mokashi. (Tata McGraw-Hill) 5. Engg. Mechanics-Statics & Dynamics by Dr. A.K. Tayal. Umesh Publication, Delhi.