표준 중력 가속도
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정의
지구 표면에서의 명목 중력 가속도로, 정확히 9.80665 m/s²로 정의되며 킬로그램힘과 무게 측정의 표준화에 사용된다.
설명
Actual surface gravity varies from 9.764 m/s² at the equator to 9.863 m/s² at the poles due to Earth’s rotation and non-spherical shape. The standard value of 9.80665 m/s² was adopted in 1901 to provide a consistent reference for force unit conversions: one kilogram-force equals exactly 9.80665 newtons. Spring scales calibrated for standard gravity will read about 0.5% high at the equator.
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