define the universal constants of G
Answers
Explanation:
Universal Gravitational Constant ( G ) :
F = G m1 m2
r^2
If m1 = m2 = 1 and r = 1 then ,
F = G
so we can say that :
The universal gravitational constant may be define as the force of attraction between two bodies of unit mass each and placed unit distance apart.
SI unit of ( G ) :
It is equal to the force of attraction between two bodies of 1 kg each and placed 1 cm apart.
G = F r^2 / m1 m2
G = N m^2 / Kg^2
Dimension of ( G ) :
As
F = G m1 m2
r^2
G = F r^2
m1 m2
G = M L T^-2 × L^2
M × M
G = [ M^-1 L^3 T^-2 ]
The value of ( G ) :
G = 6.67 × 10^-11 N m^2 / Kg^2
This upper value in SI unit .
In Cgs system :
G = 6.67 × 10^-8 dyn cm^2 / g^2.
Note :
The value of G dose not depend on the nature and the size of the bodies . And it also dose,t depend on the nature of medium between the two bodies that why it is know as universal gravitational constant .
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