Engineering mechanics is a branch of applied science that deals with the laws and principles of mechanics and their application to engineering problems. It is concerned with the motion and rest of bodies under the action of forces. Some key terms in engineering mechanics include mass, time, space, length, displacement, velocity, acceleration, momentum, force, stress, and strain. Mass is a measure of the amount of matter in a body, while time is a measure of successive events like the Earth's rotation. Space and length help define the region and dimensions over which a body exists.

1. BASIC TERMINOLOGY OF
ENGINEERING MECHANICS

2. MECHANICS Mechanics is one
of the oldest
physical science
and is a branch
that is concerned
with the state of
rest or motion of
bodies subjected
to the action of
forces ENGINEERING
MECHANICS
It is a branch of
Applied Science,
which deals with
the laws and
principles of
mechanics, along
with their
applications to
engineering
problems

3. MASS
• Quantity of matter possessed by a body
• Its value wont change
TIME
• Measure of successive events
• Successive event selected is the rotation of earth
on its own axis
SPACE
• Geometric region in which study of body is done
• Determined through a pre determined point

4. • Distance measured
along the longest
dimension of an
object
LENGTH
• A displacement is
scalar that is the
shortest distance
from the initial to
the final position of
the body
DISPLACEMENT
• The velocity of an
object is the rate of
change of its position
with respect to a frame
of reference, and is a
function of time
VELOCITY

5. ACCELERATION
• Rate of change of
velocity
MOMENTUM
• The quantity of
motion of a moving
body, measured as a
product of its mass
and velocity
RIGID BODY
• a rigid body is a
solid body in which
deformation is zero or
so small it can be
neglected

6. DISTANCE
• Distance is a numerical
description of how far apart
objects are
PARTICLE
• A body with mass but with
dimensions that can be
neglected
CONTINUUM
• Body consisting of several
matters

7. FORCE
Push or Pull Ability to do work
Interaction which
when unopposed
changes motion of
object

8. •It states that everybody continues in its state of rest or of
uniform motion in a straight line unless it is compelled by an
external agency acting on it.

9. • It states that the rate of change of momentum of a body is directly proportional
to the impressed force and it takes place in the direction of the force acting on it.

10. It states that for every action there is an equal and opposite reaction.

11. STRESS
Internal forces transmitted
through the body
STRAIN
Measure of deformation of
material