Friday, July 23, 2010

Sir Isaac Newton

ABOUT SIR ISAAC NEWTON
1. Birth:- 4 January 1643-31 March 1727




To know more about Sir Newton.......
click HERE

Thursday, July 22, 2010

Basics of Physics.........

Physics is a systematic study of the natural world, a discipline that attempts to quantify reality through a precise application of observation coupled with logic and reason. In order to make use of such a discipline, of course, there is certain foundational information that you must have first, in order to build upon it.




The First Thing we are going to learn is "kinematics...."
What is 'Kinematics'? the answer to this is very simple.
Kinematics is the branch of classical mechanics that describes the motion of objects without consideration of the causes leading to the motion.

MOTION
Motion. It is the very best known part.
But in Physics, motion has got its own definition.
There are three "Laws of Motion"

*1. Law of Inertia.
-->An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
*2. Acceleration is produced when a force acts on a mass. The greateAdd Videor the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
F=MA
*3. Action Reaction Law.
-->For every action there is an equal and opposite re-action.