DIGITAL NOTES
ENGINEERING MECHANICS
R18A0302
B.Tech –II Year – I Semester
DEPARTMENT OF MECHANICAL ENGINEERING
MALLA REDDY COLLEGE OF
ENGINEERING & TECHNOLOGY
(An Autonomous Institution – UGC, Govt.of India)
Recognizes under 2(f) and 12(B) of UGC ACT 1956
(Affiliated to JNTUH, Hyderabad, Approved by AICTE –Accredited by NBA &
NAAC-“A” Grade-ISO 9001:2015 Certified)
ENGINEERING MECHANICS
i
, MALLAREDDY COLLEGE OF ENGINEERING AND TECHNOLOGY
II Year B. Tech MECH-I Sem L T/P/D C
3 3
((R18A0302) ENGINEERING MECHANICS
Course objectives:
The Student is to develop the capacity to predict the effects of force
and motion while carrying out the creative design functions of
engineering.
To help the student develop this ability to visualize, which is so vital to
problem formulation.
Maximum progress is when the principles and heir limitations are learned
together within the context of engineering applications.
Unit – I
Introduction Resultants of Force System Parallelogram law –Forces and components- Resultant of coplanar
Concurrent Forces Moment of Force-problems.
Equilibrium of Force Systems: Free Body Diagrams, Equations of Equilibrium - Equilibrium
of planar Systems
Unit – II
FRICTION: Introduction – Theory of Friction – Angle of friction - Laws of Friction – Static and Dynamic
Frictions
Analysis of Pin-Jointed Plane Frames : Determination of Forces in members of plane, pin jointed, perfect
trusses by (i) method of joints and (ii) method of sections. Analysis of various types of cantilever & simply–
supported trusses-by method of joints, method of sections
Unit – III
Centroids and Centers of Gravity: Introduction – Centroids and Centre of gravity of simple figures (from
basic principles ) – Centroids of Composite Figures - Theorem of Pappus – Center of gravity of bodies and
centroids of volumes.
Unit – IV
Moments of Inertia: Definition – Polar Moment of Inertia –Radius of gyration - Transfer formula for
moment of inertia - Moments of Inertia for Composite areas - 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.
ii
,Unit – V
Kinematics of a Particle: Motion of a particle – Rectilinear motion – motion
curves – Rectangular components of curvilinear motion.
Kinetics of particles: D’Alemberts Princile for plane motion and Connected bodies
TEXT BOOKS:
1. Engineering Mechanics/ S. Timoshenko and D.H. Young, Mc Graw Hill Book Company.
2. Engineering Mechanics - Statics and Dynamics by Vijaya Kumar Reddy K , Suresh
Kumar J.BS Publications
REFERENCES:
1. Engineering Mechanics / S.S. Bhavikati & K.G. Rajasekharappa
2. A text of Engineering Mechanics / YVD Rao / K. Govinda Rajulu/ M. Manzoor
Hussain, Academic Publishing Company
3. Engg. Mechanics / M.V. Seshagiri Rao & D Rama Durgaiah/ Universities Press
4. Engineering Mechanics, Umesh Regl / Tayal.
5. Engineering Mechanics / KL Kumar / Tata McGraw Hill.
6. Engineering Mechanics / Irving Shames / Prentice Hall
COURSE OUTCOMES:
This capacity requires more than a mere knowledge of the
physical and mathematical principles of mechanics
Ability to visualize physical configurations in terms of real materials, actual
constraints ,and the practical limitations which govern the behavior of
machines and structures
Indeed, the construction of a meaningful mathematical model is
often a more important experience than its solution
iii
, CONTENTS
UNIT NO NAME OF THE UNIT PAGE NO
I RESULTANTS OF FORCE SYSTEM & EQUILIBRIUM 1- 25
OF FORCE SYSTEMS
II FRICTION & ANALYSIS OF PIN-JOINTED PLANE 26 - 39
FRAMES
III 40 - 50
CENTROIDS AND CENTERS OF GRAVITY
MOMENTS OF INERTIA & MASS MOMENT OF
IV 51 - 60
INERTIA
V KINEMATICS OF A PARTICLE & KINETICS OF 61 - 100
PARTICLES
iv
ENGINEERING MECHANICS
R18A0302
B.Tech –II Year – I Semester
DEPARTMENT OF MECHANICAL ENGINEERING
MALLA REDDY COLLEGE OF
ENGINEERING & TECHNOLOGY
(An Autonomous Institution – UGC, Govt.of India)
Recognizes under 2(f) and 12(B) of UGC ACT 1956
(Affiliated to JNTUH, Hyderabad, Approved by AICTE –Accredited by NBA &
NAAC-“A” Grade-ISO 9001:2015 Certified)
ENGINEERING MECHANICS
i
, MALLAREDDY COLLEGE OF ENGINEERING AND TECHNOLOGY
II Year B. Tech MECH-I Sem L T/P/D C
3 3
((R18A0302) ENGINEERING MECHANICS
Course objectives:
The Student is to develop the capacity to predict the effects of force
and motion while carrying out the creative design functions of
engineering.
To help the student develop this ability to visualize, which is so vital to
problem formulation.
Maximum progress is when the principles and heir limitations are learned
together within the context of engineering applications.
Unit – I
Introduction Resultants of Force System Parallelogram law –Forces and components- Resultant of coplanar
Concurrent Forces Moment of Force-problems.
Equilibrium of Force Systems: Free Body Diagrams, Equations of Equilibrium - Equilibrium
of planar Systems
Unit – II
FRICTION: Introduction – Theory of Friction – Angle of friction - Laws of Friction – Static and Dynamic
Frictions
Analysis of Pin-Jointed Plane Frames : Determination of Forces in members of plane, pin jointed, perfect
trusses by (i) method of joints and (ii) method of sections. Analysis of various types of cantilever & simply–
supported trusses-by method of joints, method of sections
Unit – III
Centroids and Centers of Gravity: Introduction – Centroids and Centre of gravity of simple figures (from
basic principles ) – Centroids of Composite Figures - Theorem of Pappus – Center of gravity of bodies and
centroids of volumes.
Unit – IV
Moments of Inertia: Definition – Polar Moment of Inertia –Radius of gyration - Transfer formula for
moment of inertia - Moments of Inertia for Composite areas - 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.
ii
,Unit – V
Kinematics of a Particle: Motion of a particle – Rectilinear motion – motion
curves – Rectangular components of curvilinear motion.
Kinetics of particles: D’Alemberts Princile for plane motion and Connected bodies
TEXT BOOKS:
1. Engineering Mechanics/ S. Timoshenko and D.H. Young, Mc Graw Hill Book Company.
2. Engineering Mechanics - Statics and Dynamics by Vijaya Kumar Reddy K , Suresh
Kumar J.BS Publications
REFERENCES:
1. Engineering Mechanics / S.S. Bhavikati & K.G. Rajasekharappa
2. A text of Engineering Mechanics / YVD Rao / K. Govinda Rajulu/ M. Manzoor
Hussain, Academic Publishing Company
3. Engg. Mechanics / M.V. Seshagiri Rao & D Rama Durgaiah/ Universities Press
4. Engineering Mechanics, Umesh Regl / Tayal.
5. Engineering Mechanics / KL Kumar / Tata McGraw Hill.
6. Engineering Mechanics / Irving Shames / Prentice Hall
COURSE OUTCOMES:
This capacity requires more than a mere knowledge of the
physical and mathematical principles of mechanics
Ability to visualize physical configurations in terms of real materials, actual
constraints ,and the practical limitations which govern the behavior of
machines and structures
Indeed, the construction of a meaningful mathematical model is
often a more important experience than its solution
iii
, CONTENTS
UNIT NO NAME OF THE UNIT PAGE NO
I RESULTANTS OF FORCE SYSTEM & EQUILIBRIUM 1- 25
OF FORCE SYSTEMS
II FRICTION & ANALYSIS OF PIN-JOINTED PLANE 26 - 39
FRAMES
III 40 - 50
CENTROIDS AND CENTERS OF GRAVITY
MOMENTS OF INERTIA & MASS MOMENT OF
IV 51 - 60
INERTIA
V KINEMATICS OF A PARTICLE & KINETICS OF 61 - 100
PARTICLES
iv
