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General Information, Facts & Tables
[Gravitational Field Strength]

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Overview

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Because the Earth is not a perfect sphere the gravitational field strength varies at different locations and altitude above sea level.
 

Gravitational Field Strength

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Location

Latitude

Altitude

Field Strength
(N/kg)

metre

feet

North Pole

90 ºN

0

0

9.832

Greenland

70 ºN

20

66

9.825

Stockholm

59 ºN

45

148

9.818

Brussels

51 ºN

102

335

9.811

Banff

51 ºN

1 376

4 514

9.808

Chicago

42 ºN

182

597

9.803

New York

41 ºN

38

125

9.803

Denver

40 ºN

1 638

5 374

9.796

San Francisco

38 ºN

114

374

9.800

Canal Zone

9 ºS

6

20

9.782

Java

6 ºS

7

23

9.782

New Zealand

37 ºS

3

10

9.800