Sapphire

It's pretty easy to estimate G=acceleration. Just use
the distance from the center method, ie, at 4000 mi
from earths center it's one G, at 8000(or 4000 mi.
above the earth) it's 1/4th G. For every doubling in
distance from the center, G acceleration decreases to
1/4th the previous value.So at 32000 mi from center
it's 1/64th G(32000 minus 4000(000 mi. above the
earth), so at geosunchronous orbit, it's a little more
than 1/64th G.