Why does mass never changes but weight does?

Answer 1

Mass is how much space an object takes up. Weight is a measurement of how strong the force of gravity pulls down on said object. Weight changes because gravity changes on different planets or moons.

Answer 2

Mass is an intrinsic property of a substance while weight varies depending gravity.

For instance the Moon has about 1/3rd of Earth gravity , so if you were weigh yourself on the moon you would way 1/3rd of what you do on Earth. However you mass would be the same and if you were to run into a wall on the moon, at 1 mile an hour, it would feel just the same as running, at 1 mile an hour, into the same wall on earth. This is because your inertia (which is related to your mass and speed) would be the same in both places.

Answer 3

Pretty good answer:

The mass is always the same because mass is made up of the things inside the object.

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Rephrasing:

"Mass" is the measurement of the actual matter in you, which doesn't change.

"Weight" is the measurement of the gravitational forces between you and another

mass, which depends on the other mass as much as it depends on yours.

Answer 4

The mass of an object whether it is living or died will never change in any part of the universe... However, its wright will vary from place to place. Weight is a Force which depends on the gravitational force of the planet.

W=mg; where is the mass of the body and g is the force of gravity of the earth. As g changes in any part of the universe, similarly the weight of the object also varies.

Answer 5

Because they're two different things.

-- Mass is the amount of material that an object or a person is made of. It doesn't
depend on where the object is, or what else is around it, and it doesn't change.

-- Weight is the force of gravity between the mass of the object and the mass of
something else around it. That force depends on the size of the object's mass, and
on the size of the other mass, and on how close together they are.

Here's an analogy that may or may not help:

-- Mass is like the amount of metal in your pocket ... it doesn't matter what else is
around you, and it doesn't change.

-- Weight is like the forces that act on your pocket when there are magnets around
you ... those depend on what's in your pocket and on what else is around you.

Answer 6

Weight takes the force of gravity into account. But your mass does not. The moon's gravity is 1/6 of Earth's so you would weigh less on the moon.

Answer 7

weight=mass*gravitational constant Therefore, one's weight on the Moon would be different than on Earth, but his mass on both the Moon and the Earth would be the same.

Answer 8

Mass is what you are made up out of (the stuff inside your body) while weight is the gravitational pull of your body to the ground.