| Acceleration due to gravity $(g)$ | Universal gravitational constant $(G)$ |
|---|---|
| $(i)$ It is the acceleration acquired by a body due to the earth's gravitational pull on it. | $(i)$ It is numerically equal to the force of attraction between two masses of $1\, kg$ each separated by a distance of $1\, m$. |
| $(ii)$ The value of $g$ is different at different places on the surface of the earth and varies from one celestial body to another. | $(ii)$ The value of $G$ is a universal constant,i.e.,its value is the same $(6.67 \times 10^{-11}\, Nm^2 kg^{-2})$ everywhere in the universe. |
| $(iii)$ It is a vector quantity. | $(iii)$ It is a scalar quantity. |
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