Why is the magnitude of buoyancy equal to the magnitude of gravity with which the object expells the

The magnitude of the buoyant force experienced by an object in the water is equal to the magnitude of the weight (gravitational force) of the water that the object is dissipating. It is emphasized here that the two values are equal in magnitude, and it is not possible to say "...... in generalBuoyancy = ......Gravity". Because "force" is a physical quantity, it has directionality in addition to magnitude, buoyancy up and gravity downward, the two can only be a pair of balanced forces and cannot be equal.

Archimedes' principle content: f float g row.

An object immersed in a liquid or gas is subject to the buoyant force of the liquid or gas on it in a vertical upward direction, and the amount of buoyancy is equal to the weight of the object discharging the liquid or gas.

The liquid itself is an equilibrium system, the buoyancy provided per unit volume is equal to the gravitational force per unit volume, if the gravity per unit volume of liquid is less than the weight of the object immersed in the liquid, the object sinks, if it is equal to, the object is suspended, and if it is greater than, the object floats.

Let me explain to you this, if you put an object with volume v in the water, and occupy the space with volume v in the water, the water that was originally in the water with space v is balanced, and is subjected to its own gravity g vertically downwards and other parts of the water force g vertically upwards, and after you replace this water with a volume v with an object, then only the other water forces g on the object upwards remain.

If you don't wait, then it's either going down or up.

Equal, because it is at rest, the force is balanced.

Just look for a book and read the Archimedes' principle.

Archimedes' Law: There are experiments in the book.

Buoyancy is not necessarily related to gravity. Without liquids and gases, gravity has little to do with buoyancy. But in liquids and gases, they are related when studying the forces and motion of objects.

When the buoyant force is greater than the gravitational force, the object floats in the liquid and finally floats on the surface of the liquid, and the gravitational force at this time is equal to the buoyant force. When buoyancy is equal to gravity, the object is suspended in a liquid. When the buoyancy is less than the gravitational force, it sinks to the bottom of the window container in the liquid.

Due to the difference in the depth of the upper and lower surfaces of the liquid (or gas), the pressure of the liquid (or gas) is not equal, and the upward pressure on the lower surface is greater than the downward pressure on the upper surface, and the difference between these two pressures forms buoyancy. The magnitude of buoyancy is related to the amount of liquid (or gas) expelled.

Taking an object immersed in liquid as an example, because the liquid will produce pressure, and the pressure increases with the increase of depth, and there is pressure inside the liquid in all directions, the upward pressure of the liquid on the lower bottom surface of the object is greater than that of carrying, and the downward pressure of the liquid on the upper and bottom surface is smaller, and the pressure difference between the upper and lower bottom surfaces of the object is manifested as vertical upward buoyancy. The pressures on the sides cancel each other out.

f float = liquid * g * v row = m liquid * v row = g liquid.

As for why fs is defined as a unit of energy, it can be assumed that a car can drive s meters with a full tank of fuel, obviously this car can drive s meters with a full tank of fuel, if other conditions remain constant, the work to be done by the car is proportional to the distance, not to the square of the distance, 7,1Because the object floats in the water and does not move, it means that the resultant external force is zero, and the more force balance knows that the buoyancy force on the object is equal to the gravitational force on the discharging water.

2.The unit of energy is watt w, not fs, what you said fs is the definition of work, this is a stipulation, all are stipulated, how can you change, just like you are looking at these words I typed, why do you say "look"?? You can't say "eat", or "lick.""is a ....... truth

0,1.The buoyancy force experienced by the object in the water is f float = p liquid * g * v discharge.

V is equal to the volume of water discharged.

Then p liquid * v row is equal to the mass of the drained water and then * g so = g row 2In motion w=fs

So it would be correct to say that fs is a unit of energy.

However, it is generally necessary to write j, 0, why is the buoyancy of the object equal to the gravitational force of the water?

Don't tell me about Archimedes' law, I want to know the principle.

And why is fs defined as a unit of energy, and not as something else, such as fs on the 21st floor of the energy unit is coul.

To make it easier to illustrate, I followed the simple assumptions.

Let the object be a cube floating on the water surface, and the object is stationary, it is easy to imagine that the object must occupy a part of the water space, and this space is originally where there is water, and when the water is discharged, this part of the water is still there, and the water is subject to the equilibrium force, that is, its own gravity and the upward support force of the water in the container to the water is the balance force, and the upward support force is the buoyancy generated by the water in the container.

Because the object immersed in the liquid experiences an upward buoyant force, the magnitude of the buoyancy force is equal to the gravitational force exerted by the liquid it displaces.

Mathematical expression: f float = g row = tu ·g · v row .

The buoyancy of an object floating in a liquid is also equal to its own gravity. The reason is that the object experiences only two forces: one is gravity and the other is buoyancy. Because the object is at rest, the two forces are balanced, so gravity = buoyancy.

Because its density is less than that of water, the gravity of the volume of water that it invades is greater than that part of the water that it invades. The larger part is exactly equal to the gravitational force on the part of the object that does not invade.

**The relationship between the magnitude of buoyancy and the gravitational force exerted by the liquid.

Because buoyancy occurs due to the difference between the upward and downward pressure of an object on it by a liquid or gas.

Suppose a square object is submerged in water, the pressure on the four surrounding sides of it is balanced, but the pressure on the upper surface is less than on the lower surface, the pressure difference = the area of the height difference of the water density.

The area of a certain face of the square x the height of the square Density of water = volume of the square Density of water.