Statics of Rigid
Bodies
1. Engineering
–
application
of
mathematical and physical sciences to
the design and analysis of things for the
benefit of mankind
2. Mechanics – a branch of physics that
considers the action of forces on bodies
or fluids at rest or in motion.
3. Physics – the science that relates the
properties of matter and energy,
including thermodynamics, electricity,
magnetism, and nuclear physics
4. Rigid body – idealization of a solid body
in which deformation is neglected
5. Fluids – idealization of liquids and gases
6. Law of universal gravitation - a law that
states that the two particles are
attracted to each other by forces that act
along the line connecting the particles
7. Mass – a measure of the quantity of
matter (scalar) contained in a body; a
measure of resistance to change in
velocity known as the inertia of a body
8. Force – is the product of the mass of a
particle to its acceleration vector
14. Statics – deals with the distribution and
effect of forces on bodies that are at rest
and remain at rest
15. Dynamics – deals with the study of the
motion of bodies and their correlation
with the forces causing them; classified
into kinematics and kinetics
16. Kinematics – the study of the motion of
bodies without considering the forces
causing the motion
17. Kinetics – study of the motion of bodies
together with the forces causing the
motion
Newtonian Mechanics
In 1687, Sir Isaac Newton published his
celebrated laws of motion in Principia
(Mathematical
Law of universal gravitation
F=ma
9. Weight – is the force of gravitation
acting on a body (g = 9.81 m/s2 or 32.2
ft/s2 on earth)
W=mg
10. Engineering Mechanics – a branch of
engineering that applies the principles of
mechanics to mechanical design that
must take into account the effect of
forces.
11. Mechanics of Fluids – deals with the
study of liquids and gases that are at rest
or in motion
12. Mechanics of Deformable Bodies –
deals with the internal force and
deformation developed from actual
engineering structures and components
13. Mechanics of Rigid Bodies – deals with
the external effects of rigid bodies;
classified into statics and dynamics
G: universal gravitational constant equal to
3.44x10-8 ft4 /(lb-s4 ) of 6.67x10-11 m3 /(kgs2 ).