Physics

The dimensional formula for universal gravitational constant is:


ANSWER

$${ M }^{ -1 }{ L }^{ 3 }{ T }^{ -2 }$$


SOLUTION

The correct option is $$D.$$

Formula for Gravitational force is:

$$F= \dfrac{G M m}{r^{2}}$$

So, Formula for G will be,

$$G = \dfrac{F r^{2}}{M m}$$

Thus, the dimensional formula for G is,

$$M^{-1}L^{3}T^{-2}$$

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