Gravitational constant G.

[yaseen shah]

why does the meduim does not affects gravitational constant "G"

[AJ Bentley]

I think you are asking about some sort of attenuation effect on gravity passing through a medium (like speed of light through glass)?

We wouldn't be able to tell if it did. It's incredibly weak so any effects would be virtually undetectable.

[Gerenuk]

If you are comparing it to the dielectric susceptibility, then there is a similar effect of course. Gravitation will move objects so objects even further away will experience a modified attraction due to the rearrangement of objects.

But this is no negative gravitation, so you don't get the equivalent of the polarisation effect for dielectrics.