‫بسم هللا الرحمن الرحيم‬
STATICS
(ENGINEERING MECHANICS-I)
About the Instructor
Name: Dr. Kamran Zeb (PhD, South Korea)
Power and Control, Renewable Energies, Electric Drives
Journals Papers: 28, Conference Papers:30
Website:https://scholar.google.com.pk/citations?user=5n37lDcAAAAJ&hl=en.
Designation: Assistant Professor
Department: SEECS
Office: A118
Email: kamran.zeb@seecs.edu.pk
Office Hours: Displayed on the office wall.
April 28, 2024
ME 100: Dr. Kamran Zeb
1
Engineering Mechanics
A branch of the physical sciences that is concerned with the state of rest or
motion of bodies that are subjected to the action of forces
OR
A branch of science concerned with the action of forces on material bodies in
rest or in motion
Statics
Mechanics
Rigid-Body Mechanics
-Equilibrium of bodies
Deformable-Body Mechanics
Dynamics
- Accelerated motion
Fluid Mechanics
April 28, 2024
ME 100: Dr. Kamran Zeb
2
Deformable-Body Mechanics In mechanics, any body that
changes its shape and/or volume while being acted upon by any
kind of external force.
These internal force produce
"stresses" in the body, which
could ultimately result in the
failure of the material itself.
Mechanics of Fluids: The mechanics of fluids is the branch of mechanics that deals with
liquids or gases. Fluids are commonly used in engineering applications. They can be classified
as incompressible, or compressible.
Compressible flow (air)
Incompressible flow (water)
Lecture 2: Addition of Coplanar forces
When a force is resolved into two components along the x and y axes,
the components are then called rectangular components.
For analytical work we can represent these components in one of two ways, using either
scalar notation or Cartesian vector notation.
The direction of F can also be defined using a small “slope” triangle
Each of these unit vectors has a dimensionless magnitude of one, and so they can be
used to designate the directions of the x and y axes, respectively
Coplanar force system refers to the number of forces which remain in same plane.
It is also stated as the number of forces in a system which remains in single plane.
Resultant Force: Magnitude & Orientation
Learning Exercise 1
Determine the x and y components of F1 and
F2 acting on the link shown in the following
figure. Express each force as a Cartesian
vector.
Learning Exercise 2
The link in the following figure is subjected to
two forces F1 and F2. Determine the
magnitude and angle of the resultant force.
NOTE: Comparing the two methods of solution, notice that the use of scalar
notation is more efficient since the components can be found directly, without first
having to express each force as a Cartesian vector before adding the components.
Later, however, we will show that Cartesian vector analysis is very beneficial for
solving three-dimensional problems.
Learning Exercise 3
The end of the link O in the following figure is
subjected to three concurrent and coplanar
forces. Determine the magnitude and
direction of the resultant force.