This programcomputes the acceleration due to gravity fur any latitude and elevation using Helmert's approximation:

G=980.616-2.5928cos(2L) +0.0068cos2(2L) -1.0125 x 10-5H

The International Committee on Weights and Measures has adopted a standard accepted value for the acceleration due to gravity as:

32.174 Ft/Sec x Sec (980.665Cm/Secx Sec)

Downloads:

basic program (liberty basic) lbadg.bas

Test Case:

Denver, Colorado is at 39 degrees N latitude and 5280 feet elevation.  Key West, Florida is at 24 degrees N latitude and at sea level. Compare the acceleration due to gravity for the two locations.

ACCELERATION DUE TO GRAVITY

LATITUDE (0-90 DEG) =  39
ALTITUDE(FEET)=  5280

G (FT/SEC*SEC) = 32.1530107
G (CM/SEC*SEC) = 980.023765

CONTINUE (Y/N) = ?y


LATITUDE (0-90 DEG) =  24
ALTITUDE(FEET)=  0

G (FT/SEC*SEC) = 32.1156223
G (CM/SEC*SEC) = 978.884168

CONTINUE (Y/N) = ?n