The rise and fall of an object in the water has one with what factors

Light and heavy, density of liquid, size.

The sinking of an object in water is related to the float and the density of an object is related to the density of water. There are three main states:

1. When the density of the object is greater than the density of water, the object will sink, for example, a solid iron ball will sink if it falls into the water.

2. When the density of the wheel body is smaller than the density of water, the object can float on the water, for example, we use steel to make a ship, although it is made of steel, but because the interior is hollow, the density of the whole ship is smaller than that of water, so it floats on the water. Bend letter.

3. When the density of the object is equal to the density of the water, the object will be suspended in the water, that is, it can stay anywhere under the water.

In fact, submarines are the best example, and they can change their density through their own water intake and discharge, so that they can float and sink or stop somewhere in the water.

1. The gravitational force of the object itself and the amount of buoyancy it is subjected to. Gravity is greater than buoyancy, sinking; Gravity = buoyancy, floating or levitating.

Second, in terms of density, the average density of the object (total mass divided by total volume) is greater than that of liquid, sinking; The average density of an object is less than that of a liquid, floating; The average density of an object is equal to the average density of a liquid, suspended in suspension.

The rise and fall of an object in water is related to the average density of the object.

1) When the average density of the object is greater than the density of water, the object will sink and sink to the bottom with a supporting surface and be stationary;

2) When the average density of the object is less than the density of water, the object floats, at which point, the gravitational force experienced by the object is equal to the buoyancy it exceeds.

3) When the average density of the object is equal to the density of the water, the object will be suspended in any position in the water where the object can be submerged. At this point, the gravitational force experienced by the object is equal to the buoyant force experienced by it.

The sinking and floating of an object in a liquid is related to factors such as the weight and volume of the object itself.

All other things being equal, the lighter the weight of the object, the less gravitational force it is subjected to, and the easier it is to float in the liquid.

The larger the volume, the smaller the density of the object, when the average density of the object is less than the average density of the liquid, it can float, when the average density of the object is greater than the average density of the liquid, it will sink, and when the average density of the object is equal to the average density of the liquid, it can stay anywhere in the liquid.

10-3 Sinking and floating conditions and applications of objects Deep-sea blackfish.

1. The volume of the object (the buoyancy of the object = the volume of the liquid it distributes, that is, f float = v row).

2. The weight of the object, to be precise, should be the density of the object and the density of water, which is larger and who is smaller3, the shape of the object (in fact, its shape is related to the volume of its water discharge) 6, the material of the object.

7. Whether the object is hollow.

Volume, weight, density, and shape may all affect its rise and fall in water. For example, larger objects can float on the surface of the water if they are less dense than water; For smaller objects, the tension on the water surface should be considered.

Although the density of the object is high, it may also float on the surface of the water when its weight is less than the tension of the water. An interesting example of this is the floating coin experiment. The density of the coin is greater than that of water, but the dexterity of the method allows it to float on the water.

But if you change the shape of the coin, it may sink.

The coin experiment is like this: put a coin on toilet paper and then place the toilet paper on calm water. When the toilet paper is naturally soaked, it will sink and the coin will float on the surface of the water.

Five Crakau does not test old Kaula Ullah mine.