8. • Statics : Static is the study of force which are
required to keep a body to equilibrium and the
body state at rest.
• Dynamics : Dynamics is the study of force
where body is not equilibrium and the bodies
is moving.
9. CHARACTERISTICS OF
MECHANICS
• Rest : An object does not change it’s position in course of
time with respect to it’s surroundings than the body is
called at rest.
• Motion : An object change it’s position in course of time
with respect to it’s surroundings than the body is called at
motion. There are 5 kinds of motion.
1. Translational
2. Rotational
3. Transla-rotational
4. Periodic
5. Vibrational
10. Speed:
It is the rate of change of distance. It is
denoted by the symbol “V”.
Mathematically, speed= distance/time
1. Average speed
2. Instantaneous speed
3. Uniform speed
4. Non – Uniform speed
11. Velocity:
It is the rate of change of displacement.
it is denoted by the symbol “V”.
Mathematically, Velocity = Displacement/time
1. Average Velocity
2. Instantaneous Velocity
3. Uniform Velocity
4. Non – Uniform Velocity
12. Acceleration:
It is the rate of change of velocity. It
denoted by the symbol “a”.
Acceleration= Final velocity-initial
velocity/Time taken
1. Uniform acceleration
2. Non – uniform acceleration
13. BASE OF ANALYTICAL MECHANICS
First law of motion: Everybody continues in its
state of rest or constant speed in straight line.
second law of motion:
F= ma
Third law of motion: For every reaction , There is
an opposite and equal reaction.
before collision after collision
14. SOME APPLICATION ON ENGINEERING
• Moving water such as river
• Moving object such as vehicle
• Rotation and revolution of the earth
• Walking and running
• Object that are falling (free fall)
• Sound energy
• A flying bird
