The SI unit of gravitational constant is

Options

A. N
B. J
C. `m//s^(2)`
D. `Nm^(2)kg^(-2)`

Answer

D

Explanation

From `F=(Gm_(1)m_(2))/d^(2)`
`G=(Fd^(2))/(m_(1)m_(2))=(Nm^(2))/(kg)^(2)=Nm^(2)`