INTRODUCTION
Engineering mechanics is a fundamental branch of physics that deals with the study of motion, forces, and energy. It provides the foundation for understanding and analyzing the behavior of objects and systems in various engineering disciplines. Knowledge of Engineering mechanics is essential for an engineer to plan, design and construction of various types of machine and structure.
The word Mechanics was coined by a greek philosopher Aristotle.
1.1 PARTS OF ENGINEERING MECHANICS :
The subject of Engineering Mechanics is divided into two parts. (a) Static, (b) Dynamic
(a) STATICS : It is the branch of Engineering mechanics, which deals with the forces and their effects, while acting upon the bodies at rest.
(b) DYNAMICS : It is a branch of Engineering mechanics, which deals with the forces and their effects, while acting upon the bodies in motion. It is further subdivided into the two branches, kinetics and kinematics.
(b.i) Kinetics : This branch of dynamics deals with the bodies in motion due to the application of forces.
(b.ii) Kinematics : This branch of dynamics deals with the bodies in motion without taking into account the forces which are responsible for the forces.
1.2 RESULTANT FORCE: It is a single force which produces the same effect as produced by all the given forces acting on a body. The resultant force may be determined by the three laws of forces.
- Parallelogram Law of Forces.
- Triangle Law of Forces.
- Polygon Law of Forces.
| FORCE |
| Force is an action which changes or maintain the motion of the body. To determine the effect of the force we must know. 1. The magnitude of the force. 2. Line of action of the force. 3. Push or pull force. 4. Acting point of the force. |
Parallelogram Law of Forces. It
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