mechanics machine
TRANSCRIPT
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Engineering Mechanics :
DYNAMICS
JJ205
PN NORHAYATI BINTI AHMAD
POLITECHNIC IBRAHIM SULTAN
Faculty of Mechanical Engineering
CHAPTER 5
BASIC CONCEPTS IN DYNAMICS
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OBJECTIVES:
• Explain the importance of dynamics in
engineering
• Explain general aspects of dynamics
• Describe fundamental units and basic definitions
in dynamics
• Describe the relationship between linear and
angular velocity, linear and angular acceleration
• Use the uniform acceleration formula for the
linear and angular motion
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Introduction
• Dynamics includes:
Kinematics: study of the geometry of motion. Kinematics is used to relate displacement, velocity, acceleration, and time without reference to the cause of motion.
Kinetics: study of the relations existing between the forces acting on a body, the mass of the body, and the motion of the body. Kinetics is used to predict the motion caused by given forces or to determine the forces required to produce a given motion.
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Kinematics
Rectilinear motion
position, velocity, and
acceleration of a particle
as it moves along a
straight line.
Angular motion
position, velocity, and
acceleration
of a particle
as it moves along
a curved line in two or
three dimensions
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Rectilinear motion
Moving in a negative
direction from the origin
Moving in a positive
direction from the origin
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Angular motion
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Basic Equation/ Units in Dynamics
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