This is easy to prove. Fill a 5gal bucket with tank water, put the filled bucket on a scale, get the reading, now put in a large fish. Does the weight on the scale increase?
does the weight of a fish increce tank weight?
- Thread starter matty832012
- Start date
If what you add to the tank sinks it is more dense than water and therefore makes the tank heavier. If it floats it only displaces as much water as it weighs therefor there is no net increase in the weight of the tank. I believe Archimedes discovered this principle a while back.
Sent from my iPhone using MonsterAquariaNetwork app
Sent from my iPhone using MonsterAquariaNetwork app
Not everything that sinks is Heavier then water. Every one is making this more difficult. First thing to make clear is if you add anything to your tank without removing the displaced water the weight will increase no matter what.
If you want the water the exact height as before the displacement of the fish will have to be removed.
Not many materials weigh more then water.
Sent from my SM-N900W8 using MonsterAquariaNetwork App
If you want the water the exact height as before the displacement of the fish will have to be removed.
Not many materials weigh more then water.
Sent from my SM-N900W8 using MonsterAquariaNetwork App
Simply put yes. Archemedes Principal of weight, volume and displacement. Unless you remove the voulme of water displaced (which is not directly proportional to the added weight) if you add 5lbs. of fish you add 5 lbs of weight.
http://physics.weber.edu/carroll/archimedes/principle.htm
http://physics.weber.edu/carroll/archimedes/principle.htm
As said before, internal forces such as buoyancy caused by the displacement of water would not be registered by an external scale set up to measure the external force of gravity on the whole system. If you add mass to the aquarium, then the total mass and hence the total weight will go up by that amount. Suppose you were standing on a platform scale with another person and the total of your weights was 240 lb. Then, still standing on the scale you lifted the other person so that they were no longer in contact with the scale but being held up by you (this is like the buoyant force on the fish). What do you think the scale would read now? Any other physicists want to chime in? I am one.
Lest think on this:
Imagine you weight 225 and your tank is big enough so you can jump into it.... does your 225 lb somehow disappear?... No, your weight is simply going to increase the whole setup weight. Same happens with fish.
Imagine you weight 225 and your tank is big enough so you can jump into it.... does your 225 lb somehow disappear?... No, your weight is simply going to increase the whole setup weight. Same happens with fish.
