Fundamentals of Engineering Mechanics: Mechanics, Quantities, Dimensions, and Units

Notes

Engineering Mechanics: STATICS Engr. Ronald P. Bual Assoc. Prof. General Principles  WHAT IS MECHANICS? ❑ Mechanics, at its most basic level, is the study of forces and their effects on the motion of bodies. ❑ Study of what happens to a “thing”(the technical name is “body”) when FORCES are applied to it. ❑ Mechanics has three branches: the mechanics of rigid bodies, the mechanics of deformable bodies, and the mechanics of fluids. 2 Branches of Mechanics Mechanics Rigid Bodies Statics (ES 61) Dynamics (ES 62) Deformable Bodies (ES 64) Fluids (ES 65) 3 Rigid Body Mechanics…  Statics deals with the equilibrium of bodies, that is, those that are either at rest or move with a uniform velocity.  Dynamics consists of two parts: kinematics, the study of the motion of bodies without considering the manner the motion is produced, and kinetics, the study of bodies with unbalanced forces. 4 Applications The results obtained in mechanics apply directly to many fields of engineering, e.g. 5 Fundamental concepts of mechanics  Length, time, mass, and force are fundamental quantities of mechanics  Length, time, and mass are absolute quantities, which are independent of each other and can’t be ...