I wonder if it is possible for something to exist that can change weight without changing the amount of matter it contains. Like some mystery substance that if you apply current it will change from 2 lb to ½ lb or ½ lb to 2 lb ether direction is interesting.
2007-03-24 19:15:49 · 12 answers · asked by whatbeuper 2 in Science & Mathematics ➔ Physics
Remember energy is conserved, and mass IS energy, and it sure is a WHOLE LOT of it. The kinetic energy you give something becomes mass energy; the object becomes heavier according to deltaM = E/c^2, which is imperceptible at the scale we are used to (note c =~3e8m/s, so to get a kilogram, you need 9e16 Joules!). Another form of this is the Lorentz Factor: M = Mo / sqrt(1-(v/c)^2), so for an object to double in mass, it needs to go: sqrt(3/4) =~ 87% the speed of light!
2007-03-24 19:43:04 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Matter is a constant. Weight is a function of matter and gravity. Therefore, if you change the gravity, weight will also change even though mass stays the same. That is why objects on the moon weigh 1/6th of their weight on earth, even though their mass is the same. The cabin of an aircraft in a sharp dive can also reduce an object's weight to eventual weightlessness.
I think in order to replicate the same conditions on the earth's surface, you would need to either go to a location where the gravity is warped, or you would need to find some way to manipulate gravity.
2007-03-24 19:21:21 · answer #2 · answered by yanbarumuku 3 · 1⤊ 0⤋
Yes. All matter changes weight according to the amount of gravity that is applied to it. For example, everything on the moon weighs 1/6 of what it does on Earth, because gravity there is 1/6 of what it is here. If you're asking whether or not there is a miracle substance on Earth, the answer is 'not that I know of!'
2007-03-24 19:19:38 · answer #3 · answered by bionicRod 3 · 1⤊ 0⤋
Weight is a function of acceleration. Gravity is simply put a form of acceleration. Think of the earth as 1g of acceleration. Have you ever been to an amusement park? You are familiar with the ride that you stand up in, it spins around and you stick to the wall? Imagine if you put a scale behind you. Now knowing that you are sticking to the wall you know that you must be at greater than 1g, otherwise the 1g force of the earth would pull you back down. You 'weigh' more against the wall than you do to floor. Therefore the scale behind you would read that you weigh more than the one you step on after you get off the ride. As long as you don't puke when it stops spinning. Voila you are a magic substance.
2007-03-24 20:05:33 · answer #4 · answered by hendecatope 1 · 1⤊ 0⤋
To date science has not found any effective
anti gravity devices or material. If the mass and specific gravity of a substance does not change than the weight of that substance will not change.
2007-03-24 19:18:22 · answer #5 · answered by thexrayboy 3 · 0⤊ 1⤋
Nope. The basic subatomic components of a substance can never change mass without changing into something else. You'd have to change what a thing is to change it's mass.
2007-03-25 09:32:26 · answer #6 · answered by Nomadd 7 · 0⤊ 0⤋
All matter changes weight when accelerated to near the speed of light.
This has been measured in laboratories around the world.
2007-03-24 19:18:05 · answer #7 · answered by edward_otto@sbcglobal.net 5 · 0⤊ 1⤋
Any matter can change weight if it is taken someplace where the gravitational pull is less than or greater than Earth's.
2007-03-24 19:39:14 · answer #8 · answered by sweetsouth 3 · 0⤊ 1⤋
Matter is fixed, weight changes.
matter depends on the object's density of content.
weight depends on the gravity of vicinity.
2007-03-24 19:54:37 · answer #9 · answered by Rahul K 2 · 0⤊ 1⤋
of course it cant..... weight is mass times gravity... so in order 2 change the weight, you must change the mass... you CAN change the density... but not the weight... never the weight
2007-03-24 19:18:29 · answer #10 · answered by Ellen 2 · 0⤊ 2⤋