OnlineCBT
Physics · GRAVITATION
हिन्दीGiven below are two statements: Statement I: The gravitational force between two point masses satisfies Newton's third law of motion in vector form as \( \mathbf{F}_{12} = -\mathbf{F}_{21} \). Statement II: The universal gravitational constant \( G \) has the dimensional formula \( [\text{M}^{-1} \text{L}^3 \text{T}^{-2}] \) and its SI unit is \( \text{N m}^2 \text{kg}^{-2} \). In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 1
Both Statement I and Statement II are correct.
Explanation
Both statements are correct. Gravitational interaction obeys action-reaction pair F_12 = -F_21, and [G] = [F r^2 / m^2] = [M L T^-2][L^2][M^-2] = [M^-1 L^3 T^-2].
