Engineering mechanics is mainly the study of forces and their effect on rigid bodies; it also involves the application of the principle of mechanics to solve real-time engineering problems.
Statics: It is the study of objects at rest, may or may not be under the influence of forces but in the condition of Equilibrium.
Dynamics: It is the study of objects in motion and the forces causing such motion like displacement, velocity, speed, acceleration, relative velocity etc.
Kinematics: Study of motion of bodies without consideration of the cause of motion. It deals with the space-time relationship of the motion of a body like displacement, velocity and acceleration.
Kinetics: Kinetics deals with the study of motion of bodies by considering the cause of motion.
The subject of statics developed very early in history because its principles can be formulated simply from measurements of geometry andforces. For example. the writings of Archimedes (287- 212 BC.) deal wilh the principle of the lever.
Since the principles of dynamics depend on an accurate measurement of time. This subject developed much later. Galileo Galilei (1564-1642) was one of the first major contributor to this field. His work consisted of experiments using pendulums and falling bodies from some height . The most significant contributions in dynamics were made by Isaac Newton (1642-1727), who is known for his formulation of The Three fundamenlal laws of motion.
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