Changes

Surface gravity is an acceleration, and is commonly measured in the units of acceleration, which are distance (or length) per square unit of time. The [[International System of Units|SI]] units of acceleration are m/s².

Surface gravity is an acceleration, and is commonly measured in the units of acceleration, which are distance (or length) per square unit of time. The [[International System of Units|SI]] units of acceleration are m/s².

But surface gravity has another unit, ''g''. The lowercase g is always italicized in the technical literature, mainly to distinguish it from g for gram, and also from g as a symbol for the quantity called surface gravity as opposed to its value. The quantity ''g'' is the standard surface gravity of the [[earth]]. By definition this is 9.80665 m/s².

But surface gravity has another unit, ''g''. The lowercase g is always italicized in the technical literature, mainly to distinguish it from g for gram, and also from g as a symbol for the quantity called surface gravity as opposed to its value. The quantity ''g'' is the standard surface gravity of the [[earth]]. By definition this is 9.80665 m/s².

In the discussion below, ''body'' refers to a celestial body and ''object'' refers to a much smaller object that might rest on a body.

In the discussion below, ''body'' refers to a celestial body and ''object'' refers to a much smaller object that might rest on a body.