Why do people keep confusing mass with weight?
608880
And I see that you are no exception, as you HAVE confused them!!\n\nIn the S.I. system, mass is kg, and weight is N (that is Newtons)\n\nIn the Imperial system, mass is slugs and weight is pounds.\n\n1 slug is equal to 14.6 kg.\n1 lb. is qual to 4.5 N\n\nPeople generally confuse them because the authorities decided  to equate 1 kg to 2.2 lb.  Not that it makes that much of a difference if these are used for commercial and not technical/scientific purposes, since gravity is basically the same at all habitable places on Earth.
312791
it is normal, mine does the same thing, most people's weight can fluctuate easily by 6 pounds or even more. just weigh yourself once a week and that will tell you a better average than weighing in 2 or morwe times per day. but do not worry, it happens to all of us.
73162
Most men are considering their personalities instead of the weight.  You can not judge a book by its cover, so why judge a person by their weight.
720557
I think the simple answer is because they can't be bothered.\n\nThey have grown up using inches and feet and miles etc and learning a whole new set of units is too much effort.\n\nIn the UK we have been undergoing a process of changeover since the 1830s or so.  Metric units had to be used in schools from the 1950s but still old people use imperial.  The majority of people know about metric but don't use it enough to get used to it.  I have never met anyone who actually knows their weight in Kg.
1141920
Tha is normal,you are not alone some of my friends and me are dishonest when it comes to heights and weights!Good for you,you hit your lies and now it is justified by your real weight!
476205
It could mean you are losing, fat or water. It could also mean that you are gaining muscle which is heavier than fat so a scale could tell you that you weigh the same even though you have lost fat and gained muscle mass.
101996
The previous answer is not quite true. Indeed they are not the same. Weight is a measure of force, whereas mass is mass.\nHowever, you do not weigh the same everywhere on earth, although you would be hard pressed to tell the difference.\nYour weight at the top of everest, for example, is less than at sea level, because the force being exerted on you by gravity is less, allbeit only by a small amount.\nAlso, weight is a unit of force, whereas mass is not.\nMy weight may be 100kg, but my mass is (approx) 980N (at sea level), so weight and mass are actually never equal
821749
Thats normal.  a few pounds unstable is not serious.  \n\nWorry yourself if your weight keeps dropping or you don't stop getting heavier.
6855
Do NOT try to figure this out.\n\nHis bottom, which has more weight.\n\nPoetess777
1041394
Actually, the term "weight of the earth" has no real meaning.  The mass of the earth can be calculated, but weight and mass are not the same thing.  Weight is usually used to express the apparent mass of an object in the Earth's gravitational field at the planet surface.  To speak of the Earth's weight is to try to speak of the Earth's apparent mass in relation to itself and its own gravitational field.  It's like asking how far a point is from itself.  It has no meaningful answer.  If your science teacher put this question to you in terms of weight instead of mass, they should go back to coaching PE or something.
873109
Weight is the amount of force on an object and mass is the amount of matter in that object
305550
A pound of fat weighs the same as a pound of muscle, it's just that the muscle is more dense than fat, so it takes up less space than fat.
697870
I think sometimes it can be difficult for people who carry some more weight than you to understand why you are thinner. There seems to be a lot of tasty food around now so mabye some just don't understand this. I suppose it comes down to a kind of jealousy thing.
31946
reverie's wrong.  Most mass actually comes from kinetic energy, not rest mass.  you can correcly give energy (including heat energy) the same units as mass so it makes sense to say "one pound of heat"... but force is something different entirely.
73838
Its' probably a rounding error. It would depend on which masses for the elements you use, how precise you want to be.
12622
No matter where you are, weight and mass are different things.  Mass is a measurement of a quantity of matter, while weight is a measurement of the force of gravity on a given mass.  Mass is an inherent quality in an object that doesn't change, no matter where it is.  Weight can change depending on where the object is.  \n\nIf you were to choose a set of units where either your mass or the acceleration due to gravity were equal to 1 at some point on earth, then your mass and weight would have an equal value, but that would only be true in those units, for your mass, at that point on earth, and doesn't mean that the two concepts are equal. \n\nThe two links below give more detail about the difference bewteen weight and gravity.
938395
Muscle is heavier than fat, don't go by your weight.