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Why an object has a different weight in air from its weight in water?
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Why the weight of object in water is less than in air?
The force of Buoyancy in water subtracts from the weight of the object in air.
What is the relationship between buoyant force and weight in air when submerged in water?
There's no relationship between the weight of an object in air and the buoyantforce on it when it's in water.The buoyant force is equal to the weight of the water the object displaces,which depends directly on its volume.Two objects that have identical weight in air will experience radically differentbuoyant forces in water if their volumes are different.
What is the upward force exerted by a fluid on a submerged object?
the weight water displaced (volume of the object times 62.4 for fresh water) minus the weight of the object in air
Why does the weight of an object change in water?
because water weighs more than air, and there for, the weight difference between the water + object is less, making it seem as if the object has a smaller mass. Eg. Air = 0 (because we cant weigh it, so we set it as neutral) Water = 25 Object = 100 Object out of water = 100 Object in water = 75. Making it seem lighter
Why is there a difference between the weight of an object in air and its weight in water?
weight of object in water = (Mass of object) time acceleration of gravity - Mass of an equal volume of water times acceleration of gravity. note weight of object in water can be a negative value.
If an object weight 500g in air and 400g in water. what is the upthrust on it?
We can't find the term "upthrust" in any of the myriad volumes in our vast reference library. If the object's weight balances the weight of a 500g standard while in air, and the weight of a 400g standard while in water, then the effect of the water is to produce an upward force on the object equal to the weight of a 100g standard, or 0.978 Newton. By Archimedes' principle, this is also the weight of the water displaced by the object, which tells us that the object has a volume very near 100 cc.
How much more does an object weigh after it has been submerged out of water?
Submerged "out-of-water". That is not possible. It is either submerged or it is out of water. Even when an object is submerger or partically submerged it will not weigh less. The physical characteristics (weight) of the object cannot be changed. The object, when placed in water will displace a certain amount of water and the object will float if the weight of the displaced water is more that the weight of the object. The object will then sink if it weighted more that the weight of the water it displaces. That said, the actual weight of the object doesnt change but if a scale were attached to it while hanging in air, it would read greater that when the object is floating or submerged in water.
This force acts upwards on objects suspended in water or air what is it?
It is called buoyant force. It is calculated by determining the volume of water displaced by the object, which is the volume of the object under water.The weight of this quantity of water is the buoyant force. It can also be calculated by knowing the depth of the object in the water, the pressure at that depth, and the area of the bottom of the object. Buoyant Force = Pressure * depth It can also be calculated by knowing the weight of the object. If an object is floating the water is supporting the object's weight. So the buoyant force = weight of object
Why is there a difference between the weight of an object in the air and it's weight in water?
Because of buoyancy ; something that acts in the opposite direction to the force of gravity to make the object feel lighter.
Why the weight of an object is less in water than in air?
When an object is submerged it experiences a upward force called buoyancy. The buoyancy force is equal to the weight of the water the object displaces. So, if a 10-pound object displaces an amount of water that weighs two pounds (about a quart's worth), the apparent weight of the object under water is eight pounds.
What is the method of finding the volume of an object where its weight in air is compared to its wight suspended in water?
The Buoancy Method.
Why do objects weigh more in vacuum than in air?
Weight is dependant upon gravity and the relationship to large bodies of mass such as planets. However, if you were to be put into a vacuum on the surface of the Earth, you would way less. There is air pressure pushing down on you and that would add some weight. It also pushes up on parts of you. The difference is not likely to be very significant, but it should be measurable. However, I don't volunteer to be the person in the vacuum chamber! I am not a scientist, but I believe that you would weigh very slightly more in a vacuum. Think of our atmosphere as being a liquid of very low density compared with water. An object that floats in water displaces water in the amount of the object's weight; if you put a scale under a floating object, the scale registers the object's weight as zero. A perfectly bouyant object has the same density (specific gravity) as water, and as such will have a substantial weight if measured on land. But it will have no weight if weighed in water. An object that sinks in water will have weight, but it will weigh its land weight minus the weight of water displaced by its volume. This should be the same for a person (in a pressure suit, of course). The person will not be bouyed up at all by the atmosphere.
