ENGINEERING MECHANICS ( STATICS OF RIGID BODIES)
NAME: ERIKA V. GENOVES
YEAR & COURSE: BSCE - 2C
INSTRUCTOR: ENGR. GILDA D. BORBON
1. What is Engineering Mechanics?
Engineering mechanics is where the statistics of rigid bodies belong. It is divided into two
parts which we call statics and dynamics. Statics is where the forces are distributed which
remain at rest which means the object will remain where it is while the dynamics show the
forces acting on it or how the forces act with it. . Engineering mechanics is divided into
two which we call statics and dynamics, each of them is also divided into two parts or has
sub branches whereas statics is composed of force systems under it are concurrent, parallel
and non-concurrent and in applications are trusses, centroids and friction. While dynamics
are composed of kinematics and Kinetics. Translation, rotation and plane motion can be
both found in kinematics and kinetics. So, engineering mechanics is all about the forces
on rigid bodies.
2. What is Force Systems?
A force system has more than forces that act on a group or body which means not only one
force is acting but two or more. Coplanar and non-conplanar are belong to force system. In
the force system it states that coplanar is simpler than a non-conplanar because all the
action lines of the forces are in the same plane which means they don't move to another
plane they remain in one place. Force systems are classified into three lines of action which
are concurrent, parallel force systems and non-concurrent force systems. So in other words
force systems are composed of different lines of action depending how the line moves or
lies.
3. What is Axioms of Mechanics?
It states that axioms of mechanics have to be proven true or can be illustrated to be proven
true. It should not depend on how you look with it without any evidence because it is all
about the direction or magnitude of the forces.
4. What is Scalar and Vector Quantities?
Scalar quantities are defined by distance, speed, mass, density while the vector quantities
are those physical quantities that have both magnitude and direction like displacement,
velocity, acceleration, force, and mass. Vectors can be described like lines or shapes or in
other words geometrically. However the scalar can be illustrated through numerical,
computative or analytical.
5. What is Parallelogram Law?
In order to define the parallelogram you have to conduct an experiment to be proven. It is
one of the most important parts of mechanics. The resultant of two forces is the diagonal
of the parallelogram formed on the vectors of these forces according to the states of
parallelogram law.
6. What is Triangle Law?
Triangle laws are represented by two sides, the magnitude and and direction with the same
order. There are two forces represented by the free vectors.
7. What is Free Body Diagram?
It states that the free body diagram is one of the most fundamental concepts of mechanics
and means that it plays a big role in mechanics. It is where we can see a sketch of the
isolated body. Free body diagram is introduced in order to help the beginner to know the
difference between the action and reaction forces.