Hi Guys!

 

I'm busy compiling a report on the effects of gravity and part of my assignment is to state: how you can use the value of "g" (gravitational force) as a tool to determine where a person is on earth.

 

I have already spoken about central fugal forces etc, I just need to know how you can use "g" to determine your position

I don't know if this is what you're looking for, but the value of g varies slightly at different places on Earth, depending on your altitude, the shape of the Earth (not perfectly spherical, of course), and other random factors (like the density of rock underneath you).

 

Spacecraft like GOCE map variations in the gravitational field of Earth for scientific purposes.

i suppose if you have a sensitive enough measurement device and a low noise environment(not going to happen in real life, but theoretically) you could find their position on the surface of earth by measuring the distortion from the base-line.

F= gm1m2/r^2

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g= 6.67*10^-11nm^2/kg^2

That should be G and not g. Little g is used for the acceleration due to gravity. (It will be a function of distance from the gravitating body in general.) G is Newton's constant.

Earth is not a sphere and is rotating so g is different for different location.

But I doubt if latitude could be found.