system
Given the following post, respond as if you're commenting on Reddit:
human
Since the gram is a unit of mass and the pound is a unit of weight, how would one determine the mass of an object (in grams) independent of gravity?

In other words, why do you have to *weigh* an object on a scale on Earth in order to determine its *mass* (in grams) given that grams are a unit of mass and not a unit of weight?
gpt
Force = Mass*Acceleration

The only way to measure an unknown mass is either to measure the acceleration that is produced when you apply a known force, or to measure the force exerted by that object under a known acceleration (this is essentially what you are doing when you weigh yourself on a scale).

Weight is by definition the force of an object under gravitational acceleration.