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What are the dimensions of universal gravitational constant?(a) [M^2L^3T^2](b) [M^-1 L^3 T^-2](c) [M^-1 L^3 T^2](d) [M^1 L^3 T^-2]I have been asked this question in an interview.This intriguing question originated from The Gravitational Constant in section Gravitation of Physics – Class 11

Answer» RIGHT option is (b) [M^-1 L^3 T^-2]

Explanation: N m^2/kg^2 are the units of UNIVERSAL gravitational constant.

N m^2/kg^2 = m^3/ (kgs^2)

 = m^3kg^-1s^-2

Hence, the DIMENSIONS are [M^-1 L^3 T^-2].


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