THE IMPORTANT DYNAMICS IN ENGINEERING

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CONTENTS

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CONTENTS

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INTRODUCTION

THE IMPORTANT DYNAMICS IN ENGINEERING

DIFINITION

BASIC CONCEPT OF DYNAMICS

EQUATION OF MOTION

TOPIC OF STUDY

FORCE

LAWS OF MOTION

NEWTON'S LAWS

10.

TYPES OF MOTION

11.

RELATIONSHIP TO STATICS, KINETICS, AND KINEMATICS

12.

FUNDAMENTAL IMPORTANCE IN ENGINEERING,

DIMINISHING EMPHASIS IN PHYSICS

13.

FUNDAMENTAL PRINCIPLES

14.

VECTOR ANALYSIS (VECTOR MECHANIC)

15.

FREE BODY DIAGRAM (FBD’S)

16.

SIMPLE STRUCTURES

17.

INSTRUCTIONAL AIDS

18.

REFEREENCE

19.

ENCLOSURE

INTRODUCTION

Dynamics is that branch of mechanics which deal with the motion of bodies under the

action of forces. The study of dynamics in engineering usually follows the study of statics,

which the action of forces on bodies at rest. Dynamics has two distinct parts: kinematics,

which is on study of motion without reference to the forces which cause motion, and kinetic,

which related the action of forces on bodies to their resulting motions. The student of

engineering will find that the thorough comprehension of dynamics will provide one of his or

her most useful and powerful tools for analysis in engineering.

Historically, dynamics is a relatively recent subject compared with statics. The

beginning of a rational understanding of dynamics is credited to Galileo (1564-1642), who

made careful observations bodies in free fall, motion on an inclined plane and motion of

pendulum. He was largely response for bringing a scientific approach the investigation of

physical problems. Galileo was continually under severe criticism for refusing to accept the

established beliefs of his day, such as the philosophies of Aristotle which held for example

that heavy bodies fall more rapidly than light bodies. The lake of accurate means for the

measurement of time was a severe handicap to Galileo, in further significant to development

in dynamics awaited the invention of the pendulum clock by Huygens in 1657.

Sir Isaac Newton (1642-1727), guided by Galileo’s work, was able to make accurate

formulation of the laws of motion and, hence, to place dynamics on a sound basics. Newton’s

famous work was published in the first edition of his Principia (1687), which is generally

recognized as one of the greatest of all recoded contribution to knowledge. In addition to

stating the law governing the motion of particle, Newton was the first correctly formulate the

law of universal gravitation although his mathematical description was accurate, he felt that

the concept of remote transmission of gravitational force without a supporting medium was

an absurd notion. Following Newton’s time, important contributions to mechanics were made

by Euler, D’Alembert, Lagrange, Laplace, Poinsot, Coriolis, Einstein, and others.

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CONTENTS NO. CONTENTS PAGES 1. INTRODUCTION 2. THE IMPORTANT DYNAMICS IN ENGINEERING 3. DIFINITION 4. BASIC CONCEPT OF DYNAMICS 5. EQUATION OF MOTION 6. TOPIC OF STUDY 7. FORCE 8. LAWS OF MOTION 9. NEWTON'S LAWS 10. TYPES OF MOTION 11. RELATIONSHIP TO STATICS, KINETICS, AND KINEMATICS 12. FUNDAMENTAL IMPORTANCE IN ENGINEERING, DIMINISHING EMPHASIS IN PHYSICS 13. FUNDAMENTAL PRINCIPLES 14. VECTOR ANALYSIS (VECTOR MECHANIC) 15. FREE BODY DIAGRAM (FBD’S) 16. SIMPLE STRUCTURES 17. INSTRUCTIONAL AIDS 18. REFEREENCE 19. ENCLOSURE INTRODUCTION Dynamics is that branch of mechanics which deal with the motion of bodies under the action of forces. The study of dynamics in engineering usually follows the study of statics, which the action of forces on bodies at rest. Dynamics has two distinct parts: kinematics, which is on study of motion without reference to the forces which cause motion, and kinetic, which related the action of forces on bodies to their resulting motions. The student of engineering will find that the thorough comprehension of dynamics will provide one of his or her most useful and powerful tools for analysis in engineering. Historically, dynamics is a relatively recent subject compared with statics. The beginning of a rational understanding of dynamics is credited to Galileo (1564-1642), who made careful observations bodies in free fall, motion on an inclined plane and motion of pendulum. He was largely response for bringing ...
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