# Engineering Mechanics Pdf Notes – EM Notes | Free Lecture Notes download

Here you can download the free Engineering Mechanics Pdf Notes – EM Pdf Notes of Latest materials with multiple file links to download. Engineering Mechanics Notes Pdf – EM Notes Pdf starts with topics covering Introduction to Engineering. Mechanics, Basic Concepts. Systems of Forces: Coplanar Concurrent Forces, Components in Space, Resultant, Moment of Force and its Application, Couples and Resultant of Force Systems, etc ## Engineering Mechanics Pdf Notes – EM Pdf Notes

Complete Notes

Unit 1

Unit 2

#### Unit 5

Note :- These notes are according to the R09 Syllabus book of JNTU.In R13 and R15,8-units of R09 syllabus are combined into 5-units in R13 and R15 syllabus. If you have any doubts please refer to the JNTU Syllabus Book.

### Engineering Mechanics Notes Pdf – EM Notes Pdf

UNIT – I

Introduction to Engineering. Mechanics – Basic Concepts. Systems of Forces : Coplanar Concurrent Forces – Components in Space – Resultant – Moment of Force and its Application – Couples and Resultant of Force Systems.

UNIT – II

Equilibrium of Systems of Forces : Free Body Diagrams, Equations of Equilibrium of Coplanar Systems, Spatial Systems for concurrent forces. Lamis Theorem, Graphical method for the equilibrium of coplanar forces, Converse of the law of Triangle of forces, converse of the law of polygon of forces condition of equilibrium.

UNIT – III

Centroid : Centroids of simple figures (from basic principles ) – Centroids of Composite Figures
Centre of Gravity : Centre of gravity of simple body (from basis principles), centre of gravity of composite bodies, pappus theorem.

UNIT – IV

Area moment of Inertia : Definition – Polar Moment of Inertia, Transfer Theorem, Moments of Inertia of Composite Figures, Products of Inertia, Transfer Formula for Product of Inertia.
Mass Moment of Inertia : Moment of Inertia of Masses, Transfer Formula for Mass Moments of Inertia, mass moment of inertia of composite bodies.

### Engineering Mechanics Pdf Notes – EM Pdf Notes

UNIT – V

Analysis of perfect frames ( Analytical Method) – Types of Frames – Assumptions for forces in members of a perfect frame, Method of joints, Method of sections, Force table, Cantilever Trusses, Structures with one end hinged and the other freely supported on rollers carrying horizontal or inclined loads.

UNIT – VI

Kinematics : Rectilinear and Curvilinear motions – Velocity and Acceleration – Motion of Rigid Body – Types and their Analysis in Planar Motion.
Kinetics : Analysis as a Particle and Analysis as a Rigid Body in Translation – Central Force Motion – Equations of Plane Motion – Fixed Axis Rotation – Rolling Bodies.

UNIT – VII

Work – Energy Method : Equations for Translation, Work-Energy Applications to Particle Motion, Connected System-Fixed Axis Rotation and Plane Motion. Impulse momentum method.

UNIT – VIII

Principle of virtual work: Equilibrium of ideal systems, efficiency of simple machines, stable and unstable equilibriums

Reference

1. Engineering Mechanics / Fedinand . L. Singer / Harper – Collins. (Engineering Mechanics notes pdf 1st year)
2. Engineering. Mechanics / Irving. H. Shames Prentice – Hall. (Engineering Mechanics notes pdf 1st year)
3. Engineering. Mechanics Umesh Regl / Tayal.
4. Engineering. Mechanics / R.V. Kulkarni & R.D. Askhevkar
5. Engineering. Mechanics/Khurmi/S.Chand.
6. Engineering. Mechanics / KL Kumar / Tata McGraw Hill.

Text books

1. Engineering. Mechanics / Timoshenko & Young.
2. Engineering. Mechanics / S.S. Bhavikatti & J.G. Rajasekharappa

Note :- These notes are according to the r09 Syllabus book of JNTUH.In R13 ,8-units of R09 syllabus are combined into 5-units in r13 syllabus.Click here to check all the JNTU Syllabus books

Q1: What are the three basic Newton’s laws of motion?

A1: Three basic newton’s laws of motion are,

• Law 1 states that “A body does not change its state of motion unless acted upon by a force”
• Law 2 states that “A force of magnitude F applied on a particle gives it an acceleration a proportional to the force”
• Law 3 states that ” For every action there is a equal and opposite reaction”

Q2: What is rigid body mechanics?

A2: Study of mechanics of deform able bodies and fluid mechanics’s basic requirement is rigid body mechanics. It iver very much required for the design, analysis of structural members, electrical devices, mechanical components, encountered in the field of engineering. It does not deform under load. Statics under rigid body mechanics deals with the body equilibrium under action of forces even when the body is either at rest or moving with the constant velocity. Dynamics under rigid body mechanics deals with the motion of bodies.

Q3: What is concentrated force?

A3: Concentrated force is an effect of a loading which is assumed to act at a point on a body provided the area over which load is applied is small compared to the overall size of the body. For example, contact force between ground and a wheel.