Question

What are the main differences between 'g ' 'G ' '?

Answer 1

1. The two symbols represent different physical quantities.
          g represents acceleration due to gravity.
         G = Universal Gravitation constant.. Given by Sir I Newton

2. They have different values
          g = 9.81 m/sec^2.    G = 

3. Their formulas are different.
            g = GM/R^2.       G = F d^2/ (M1 M2)

4. They have different units and dimensions.
              g: L T^-2               G = M^-1 L^3 T^-2 

5. g is a vector  and  G is a scalar constant.

6. g varies from planet to planet.  G is a universal constant.
7.  g is computed using  G.
               g = G M / R^2