g-force (with g from gravitational) is a measurement of acceleration felt as weight. It is incorrect to refer to it as a force, as "g" (lower case character) is an acceleration and can be measured with an accelerometer. Since such a force is perceived as a weight, any g-force can be described as a "weight per unit mass" (see the synonym specific weight). The g-force acceleration acts as a multiplier of weight-like forces for every unit of an object's mass, and (save for certain electromagnetic force influences) is the cause of an object's acceleration in relation to free-fall.
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