__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.

5. Dimensional formula for G is [M^{-1}L^{3}T^{-2}].

__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.

5. Dimensional formula for g is [M^{0}L^{1}T^{-2}].

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