** ENGINEERING MECHANICS ( 2nd year 3rd semester )**

**UNIT I BASICS & STATICS OF PARTICLES **

Introduction – Units and Dimensions – Laws of Mechanics – Lami’s theorem, Parallelogram and triangular Law of forces – Vectors – Vectorial representation of forces and couples – Vector operations: additions, subtraction, dot product, cross product – Coplanar Forces – Resolution and Composition of forces – Equilibrium of a particle – Forces in space – Equilibrium of a particle in space – Equivalent systems of forces – Principle of transmissibility – Single equivalent force.

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**UNIT II EQUILIBRIUM OF RIGID BODIES **

Free body diagram – Types of supports and their reactions – requirements of stable equilibrium – Moments and Couples – Moment of a force about a point and about an axis –Scalar components of a moment – Varignon’s theorem – Equilibrium of Rigid bodies in two dimensions – Equilibrium of Rigid bodies in three dimensions – Examples

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**UNIT III PROPERTIES OF SURFACES AND SOLIDS **

Determination of Areas and Volumes – First moment of area and the Centroid of sections –Second and product moments of plane area – Parallel axis theorem and perpendicular axis theorem – Polar moment of inertia – Principal moments of inertia of plane areas – Principal axes of inertia – Mass moment of inertia

**UNIT IV FRICTION AND DYNAMICS OF RIGID BODY **

Frictional force – Laws of Coloumb friction – simple contact friction – Belt friction.

Translation and Rotation of Rigid Bodies – Velocity and acceleration – General Plane motion.

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**UNIT V DYNAMICS OF PARTICLES **

Displacements, Velocity and acceleration, their relationship – Relative motion – Curvilinear motion – Newton’s law – Work Energy Equation of particles – Impulse and Momentum – Impact of elastic bodies.

**TEXT BOOKS**

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- Engineering Mechanics by R.S. Khurmi, S.Chand Publishers
- Natarajan, K.V.,
*Engineering Mechanics,*Dhanalakshmi Publishers, 2008. - Rajasekaran,S. and Sankarasubramanian,G.,
*Engineering Mechanics*, Vikas Publishing House Pvt Ltd, 2006. - Beer, F. P., and Johnston, E. R.,
*Vector Mechanics for Engineers – Dynamics and Statics*, Tata McGraw-Hill, New Delhi, 2001.

**REFERENCE BOOKS**

- Palanichamy, M. S., and Nagan, S.,
*Engineering Mechanics (Statics and Dynamics)*,Tata McGraw Hill, New Delhi 2001. - Kumar, K. L.,
*Engineering Mechanics*, Tata McGraw- Hill, New Delhi, 1998. - Shames, I. H., and Krishna Mohana Rao, G.,
*Engineering Mechanics (Statics and Dynamics)*, Dorling Kindersley India) Pvt. Ltd. (Pearson Education), 2006. - Hibbeller, R.C., Engineering Mechanics, Vol. 1 Statics, Vol. 2 Dynamics, Pearson Education Asia Pvt. Ltd., 2000.

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