SYSTEM OF UNITS:
THE COMBINATION OF DIFFERENT UNITS IS CALLED SYSTEM OF UNITS.
INITIALLY THERE ARE THREE SYSTEM OF UNITS
(1): M K S: METER, KG,SECOND
THE SYSTEM IN WHICH UNIT OF LENGTH IS METER MASS IS KG & TIME IS SECOND
(2): C G S SYSTEM: CM,GRAM,SECOND
THE SYSTEM IN WHICH LENGTH IS IN CM .MASS IS IN GRAM & TIME IN SECOND IS CALLED CGS SYSTEM
(3): F P S SYSTEM: FOOT,POUND,SECOND
THE SYSTEM IN WHICH UNIT OF LENGTH IS FOOT & UNIT OF WEIGTH OR FORCE IS POUND AND UNIT OF TIME IS SECOND IS CALLED F P S SYSTEM .IT IS ALSO CALLED BRITISH ENGINEERING SYSTEM
S.I SYSTEM:
The SYSTEM WHICH IS CONSIST OF (7) BASIC UNITS, AND SEVERAL DERIVED UNITS & TWO SUPPLEMENTRY UNITS IS CALLED S.I UNIT
Length meter m
mass kilogram kg
time second s
electric current ampere A
thermodynamic temperature kelvin K
amount of substance mole mol
luminous intensity candela cd
(1):LENGTH: THE DISTANCE BETWEEN TWO POINS IS CALLED LENGH .IT’S S.I UNIT IS METER
(2): MASS:
THE QUANTITY OF A BODY IN THE MATTER IS CALLED MASS . IT’S S.I UNIT IS KG
(3):TIME: THE DURATION BETWEEN TO EVENTS IS CALLED TIME .IT’S S.I UNIT IS SECOND
(4):TEMPERATURE: THE AVERAGE KINETIC ENERGY OF A BODY IS CALLED TEMPERATURE
OR
THE DEGREE OF COLDNESS & HOTNESS IS CALLED TEMPERATURE.IT’S S.I UNIT IS KELVIN
