i was reading this link and I never ever saw a definite answer. One would think if you have 1000 pounds of water, and you froze it and also weight that you would certainly still have actually the very same 1000 pounds that water as soon as weighed in ~ sea level. Even though there is less movement, right?



For all valuable purposes the weight will stay 1000 pounds when you frozen it. In theory the massive of the water will reduce somewhat through cooling due to the fact that it will certainly contain less energy when frozen, however the result would be utterly negligible.

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Although the weight will be the same, water increases in volume by around a tenth together it freezes (which is why, because that example, pipes burst in icy weather). Due to the fact that it is as such less dense, your frozen block the 1000 pounds the ice will certainly float ~ above water, however that is due to the fact that its volume has broadened on freezing and not because its weight has reduced.

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edited Oct 16 "19 in ~ 13:13
answer Oct 16 "19 in ~ 6:36

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Depends on exactly how you are specifying "weight".

If you average weight together in the vector or scalar the the gravity exhilaration on an object, Marco"s price is what girlfriend want.

There is a third meaning of weight. This is essentially "what a range measures". This meaning also fits v how world typically endure the effects of weight.

If we usage that definition, then once standing on Earth, you could say your weight is what is countered through the normal force of the ground. By this definition, astronauts in orbit are likewise "weightless", even though lock still have actually mass, and also gravity acting on them.

Now, once you freeze the water, the mass continues to be the exact same (so the downward force $mg$ is the same); yet the upwards buoyant force from the waiting increases, because of the raised volume. Because the mass continues to be the same and buoyancy increases, this way the net downward pressure of the ice cream block will certainly reduce, and therefore it"s "weight" as measured through a scale would decrease.

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In the paper definition of the Quora question, i think this third definition of load is the most relevant; since it is the easiest means to measure up weight, and is commonly what a layperson thinks of once they consider "how lot does this thing weigh?". This is why people will say freeze water will reduce it"s weight.

If it were weighted in a vacuum, friend wouldn"t expect to watch a detectable readjust in weight due to freezing. But vacuum problems aren"t the typical human experience, and most people don"t have access to a vacuum chamber v a range in it.