Introductory Mechanics
Mechanics is a field of Physics that was mostly researched during the 17th century by Sir Isaac Newton. The discipline of Physics itself is divided into two main categories: Classical Physics and Modern Physics.[1][1] Classical Physics is also often known as Newtonian Physics because most of its concepts were discovered and put forward by Newton, hence the name.[2][2] The concepts of Physics that came into being after research during the classical era are classified under Classical Physics. Modern Physics, on the other hand, is more related to the discoveries and inventions that happened in the modern era, usually represented by the time of the 1900s and onwards. Much of the work of Modern Physics is associated with Albert Einstein.
Concept[edit]
The field of Mechanics is associated with macroscopic matter and its motion in the three-dimensional Euclidean space under a cartesian coordinate grid system.[3][3] The variable position of any macroscopic matter particle at any point in time during its motion can be labeled and represented by position vectors.[4][4] Furthermore, the concept of mechanics states that no matter can itself change its state of rest or motion unless acted by an external unbalanced force. Force is the agent that changes or tends to change the state of rest or motion of a body.[5][5]
History[edit]
Like every other natural phenomenon, mechanics has also existed since the beginning of time. However, the time when it was first recognized as a concept and sub-discipline of Physics dates back to the era of ancient Greek physicists like Aristotle. The concepts of mechanics that were discovered and put forward by Aristotle are classified under Aristotelian Mechanics.[6][6] Concepts like force, momentum, and equilibrium mentioned and discussed in the sub-discipline Mechanics were once considered confusing among the ancients. It is the work of the modern era that proved that a body is set in motion under the product of its mass and velocity, and this is the very foundation for the concept of momentum.[7][7]
Subconcepts of mechanics[edit]
The same concept was then used to explain other phenomena of mechanics such as equilibrium. Equilibrium of an object is its state of rest or uniform motion. In another definition, equilibrium can also be defined as the state of an object in which the net forces acting upon it have a magnitude of zero. Equilibrium, during the ancient times, was best explained by the balancing lever method when two unequal weights were suspended on either end of a straight lever. The lever would always bend from that side, which had a great weight suspended from it.[8][8]
One of the variables that have a great influence on the motion of particles is the medium through which they are traveling. The environment that all living beings breathe in is called the rare medium. Media like water and other fluids are denser, and the motion of objects in those denser media and their mechanics are different. The study of Fluid Mechanics is different, and the rate of motion of objects and behavior of force is different in the fluids. The rate of motion of objects in a particular fluid depends upon the density of that fluid.[9][9]
References[edit]
- ↑ Ab, Makar; Ke, McMartin; M, Palese; Tr, Tephly (1975 Jun). "Formate Assay in Body Fluids: Application in Methanol Poisoning". Biochemical medicine. PMID 1. Retrieved 2020-05-23. Check date values in:
|date=(help) - ↑ K, Jain, Pushpendra; S, Nkoma, John (2019-05-22). Introduction to Classical Mechanics: Kinematics, Newtonian and Lagrangian. Mkuki na Nyota Publishers. ISBN 978-9987-08-370-1. Search this book on
- ↑ Deriglazov, Alexei (2010). Classical Mechanics: Hamiltonian and Lagrangian Formalism. Berlin Heidelberg: Springer-Verlag. ISBN 978-3-642-14036-5. Search this book on
- ↑ Deriglazov, Alexei (2010). Classical Mechanics: Hamiltonian and Lagrangian Formalism. Berlin Heidelberg: Springer-Verlag. ISBN 978-3-642-14036-5. Search this book on
- ↑ Bliss, Joan; Ogborn, Jon (1994-01-01). "Force and motion from the beginning". Learning and Instruction. 4 (1): 7–25. doi:10.1016/0959-4752(94)90016-7. ISSN 0959-4752.
- ↑ Rene Dugas. "A history of mechanics". biboto.com. Retrieved 2020-05-23
- ↑ Rene Dugas. "A history of mechanics". biboto.com. Retrieved 2020-05-23
- ↑ Rene Dugas. "A history of mechanics". biboto.com. Retrieved 2020-05-23
- ↑ Durst, Franz (2008-09-01). Fluid Mechanics: An Introduction to the Theory of Fluid Flows. Springer Science & Business Media. ISBN 978-3-540-71342-5. Search this book on
Introductory Mechanics[edit]
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