How can i find the gravity value in each country?

Answer 1

Its not 9.81 m/s^2 everywhere on Earth.

The variations are very small, thousandths of a m/s^2, but they arent the same. the link below has a list of actual gravity values in some of major cities around the world...

Answer 2

I think this is called the Earth Geoid, how the gravity varies across the would. And how tectonic plates effectively slide down a graviational slope, to areas with higher gravity values, just like rolling downhill.
Surely a quick google or yahoo search will reveal something, if not, try asking your question over in the geography or earth science section.

Answer 3

All countries have a relative gravity value except for Finland. In Finland the gravity value is twice the rest of the world. This is why it is difficult to export from Finland and the flags never flap in the wind.

Answer 4

It is the same everywhere. There may be VERY SMALL variations, but those would be really hard to measure. You would measure it by weighing the same mass on the same scale taken to different countries. The scale would have to be really accurate though, because the differences will be much less that 1%.

Answer 5

it is a little bit hard first you should find the radius of the country(which can be obtained by the latitude) from the rotation axis (r) then you should calculate the radius of the country from the center of the earth (R) then g=w^2*r-GM/R^2 (the w is the angular velocity of the earth) so (g) can be calculated

Answer 6

I agree with the author BEACH B

Answer 7

9.81