Why do scientists measure and recurd the mass of objects rather then the weight?

Answer 1

The mass is a characteristic of an object. The weight, i.e., the force of gravity, can vary a lot, depending on what other object attracts it. For example, an object with a mass of 1 kg will weigh 9.8 newton on Earth, about 1/6 of that amount on the Moon, and nothing if you weigh it in outer space. But the mass will hardly change.

Answer 2

Scientists measure and record the mass of objects rather than the weight because mass is an intrinsic property of an object that remains constant regardless of its location, while weight depends on the gravitational force acting on the object and can vary depending on the location. Mass is a more fundamental and standardized measurement compared to weight, which can fluctuate depending on factors like gravitational pull.