Universal gravitation constant(G):-
1.It is define as the force of attraction acting between two bodies each of unit mass, whose centers are placed unit distance apart.
2. Its value is same throughout the universe .
3. It is a scalar quantity .
4. Its value dose not depends upon the nature and the size of the bodies.
Acceleration due to gravity(g):-
1.It is define as the constant acceleration produced in a body when it falls freely under the effect of gravity .
2. its value changes from place to palce.
3. it is a vector quantity.
4. Its value depends upon the nature and the size of the bodies.