Concept about Mechanics – Introduction to fundamental concepts of Biological Science including the organization and common characteristics of living matters, cell structures and functions, food production by photosynthesis, harvesting energy, mechanism of cells reproduction, genetics, evolutions, and Human Biology. Introduction to general chemistry including basic concepts about matter, atomic structure, chemical bonds, gases, liquid, and solids, solutions, chemical reactions, acid, bases, and salt;
organic and biochemistry including hydrocarbons and their derivatives, carbohydrates, lipids, proteins, enzymes, vitamins, and minerals, nucleic acids; principles of physics and applications to nursing including gravity and mechanics, pressure, heat and electricity; nuclear chemistry and nuclear physics, effects of radiation on human beings, and protection and disposal. The aim of the course is to acquire knowledge and skills in general biological science, general chemistry and physics.
Concept about Mechanics
Mechanics is that area of science concerned with the behaviour of physical bodies wher subjected to forces or displacements, and the subsequent effects of the bodies on their environment.
The scientific discipline has its origins in Ancient Greece with the writings of Aristotle and Archimedes. During the early modern period, scientists such as Galileo, Kepler, and Newton laid the foundation for what is now known as classical mechanics. It is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. It can also be defined as a branch of science which deals with the motion of and forces on objects. The field is yet less widely understood in terms of quantum theory.
Definition of Mechanics:
Mechanics is the science concerned with the motion of bodies under the action of forces, including the special case in which a body remains at rest.
or
Mechanics is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment.
or
The branch of physics which deals with the study of motion of material objects is called mechanics.
Classification of Mechanics:
Mechanics can be classified into the following three main branches:
1. Statics: It is that branch of mechanics which deals with the study of objects at rest. In this branch, we study the motion of objects under the effect of forces in equilibrium. Time factor has no role to play in statics.
2. Kinematics: The branch of mechanics which deals with motion of material objects without taking into account the cause of motion (i.e. forces) is called kinematics. Time factor plays an essential role in kinematics.
3. Dynamics: the branch of mechanics which deals with motion of material objects by taking into account the cause of motion (i.e. forces) is called dynamics. As the cause of motion is force, therefore, dynamics is based on the concept of force.
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