Why does weight change with location, but mass doesn't?

Weight changes with location because it is dependent on the gravitational pull of the place, while mass remains constant everywhere.

Weight is a force that is determined by the gravitational pull on an object. The force of gravity varies depending on where you are in the universe. For example, on Earth, the force of gravity is stronger at the poles than at the equator due to the Earth's shape. This means that an object will weigh slightly more at the poles than at the equator. Furthermore, if you were to travel to the Moon, where the force of gravity is about one-sixth of that on Earth, your weight would be significantly less.

On the other hand, mass is a measure of the amount of matter in an object. It is a fundamental property of the object, which means it does not change regardless of where the object is in the universe. Whether you are on Earth, on the Moon, or floating in space, the amount of matter in an object remains the same, and so does its mass.

In physics, weight is calculated by multiplying an object's mass by the acceleration due to gravity. Since the acceleration due to gravity changes depending on location, the weight of an object will also change. However, since mass is a fixed property of an object, it remains constant regardless of location.

In conclusion, while both weight and mass are related, they are not the same. Weight is a force that depends on the gravitational pull of a location, and therefore changes with location. Mass, however, is a measure of the amount of matter in an object and remains constant everywhere.