After putting a pebble in a cup filled with water, you will love how the pressure of the water chang

The reason for the increase in pressure is: the pebble sinks into the cup, and the bottom of the cup is subjected to a certain pressure, according to P=F S, the bottom of the cup S remains unchanged, and the pressure of the water at the bottom of the cup also increases, so the pressure of the water at the bottom of the cup also increases.

Get bigger. Rigorous derivative proofs can be found in various editions of Fluid Mechanics or Hydraulics. Here's a quick proof of this:

In a stationary liquid, any column with a bottom surface as a square (the square is parallel to the horizontal plane) and a high column with a depth is used for force analysis. The force acting on the liquid column is the gravitational force g = density * g * h * s , and the direction is straight down; The atmospheric pressure acting on the surface of the liquid column fo=pos, the direction of lead straight down; The liquid pressure acting on the bottom surface of the liquid column f=p*s, and the direction of the lead is straight upward; The pressure on the four sides of the liquid column is horizontal, and the two are self-balancing. There is a downward gravitational force g acting on the lead straight direction of the liquid column, a downward atmospheric pressure fo, and an upward water pressure f, because the force is also balanced in the straight direction of the lead, so f=fo+g, ie.

p*s = pos+ density*g*h*s, and by approximating s, we get p = po+ density*g*h. If you don't count the atmospheric pressure, but only the pressure generated by the liquid itself, then p = density*g*h, because the density of the stone is greater than that of water, the pressure becomes greater.

- No change! Because the cup is filled with water, the wooden block is put in. The height of the water remains the same, and the other quantities remain the same! All the same! When the wooden block is inserted, the pressure on the bottom of the cup increases. Because the overall gravity increases a little bit forgot,

Enlarge. The pressure at the bottom of the cup increases, and the force area does not change, so the pressure increases.

Unchanged, the liquid pressure is only related to the density of the liquid, the depth of the liquid, and now both quantities are the same, so the pressure is the same.

It should not change, because the liquid pressure p= gh, these three quantities do not change, so the pressure does not change.

Summary. Stones will occupy a certain amount of space, so the capacity of the cup to hold water will be reduced. So there will be less water in the cup than in the cup.

Stones will occupy a certain amount of space, so the capacity of the cup to hold water will be reduced. So there will be less water in the cup than in the cup.

I'm sorry I don't understand, but can you elaborate on that?

This question can be answered from different angles. Physically, the volume of a cup and a stone are different, so there will be less water in a cup of water put into a stone than in a cup because the volume occupied by the stone will reduce the volume of water. From a chemical point of view, there will be mutual adsorption between water molecules, adding stones can provide more smooth surfaces, and the adsorption force between molecules will be stronger, so that the water will be condensed near the stone or row, so that the amount of water in the cup will be reduced.

In addition, influences such as the shape, size, and fluidity of the cup can also affect the displacement of water, so the same amount may have different results.

Summary. Answer: Put the stone in the water cup, and the water in the water cup will go from less to more.

This is because the stone absorbs a certain amount of water, which increases the amount of water in the cup. Workaround:1

First, prepare a water cup and some stones, put the stones in the water glass, wait for a while, and observe if the amount of water in the water cup increases. 2.Secondly, if the amount of water in the cup increases, you can take out the stone and measure the amount of water in the cup again to determine if the amount of water in the cup has increased.

Stone is an absorbent material that can absorb a certain amount of water, which increases the amount of water in the cup.

Answer: Put the stone in the water cup and keep an eye on the water in the water cup from less to more. This is because the stone absorbs a certain amount of water, which increases the amount of water in the cup.

Workaround:1First, prepare a water cup and some stones, put the stones in the water glass, wait for a while, and observe if the amount of water in the water cup increases.

2.Secondly, if the amount of water in the cup increases, you can take out the stone and measure the amount of water in the cup to determine whether the amount of water in the cup has increased. 3.

Finally, if the amount of water in the cup increases, you can put the stone back into the cup and wait for a while to see if the amount of water in the cup continues to increase. Related knowledge: Stone is an absorbent material, which can absorb a certain amount of water, which increases the amount of water in the cup.

You've done a great job! Can you elaborate on that?

In response to this question, we can answer it like this: the water in the stone cup goes from less to more because the stone stall will absorb the water in the cup, so that the amount of water will be reduced. The water absorbed by the stone is absorbed into the small pores of the stone, so that the amount of water in the cup is reduced.

In addition, the stone can also absorb moisture from the air, which can also lead to a decrease in the amount of water in the cup. The water absorbed by the stone is absorbed into the fine pores of the stone, which reduces the amount of water in the cup. In addition, the stone can also absorb moisture from the surrounding environment, which can also lead to a decrease in the amount of water in the cup.

The water absorbed by the stone is absorbed into the fine pores of the stone, which reduces the amount of water in the cup. In short, the water in the cup with stones goes from less to more because the stones absorb the water in the cup, as well as the water in the surrounding environment, so that the amount of water in the cup decreases. In addition, the stone can also absorb moisture from the air, which will also cause the amount of water in the cup to decrease and the amount of water in the cup will be reduced.

The water absorbed by the stone is absorbed into the fine pores of the stone, which reduces the amount of water in the cup. Therefore, it is normal to put less water in a stone cup to more water. In addition, the water absorption of the stone can also be used to improve the environment, for example it can be used to reduce the moisture in the soil, thus reducing the occurrence of flooding.

Stone can also be used to reduce moisture in the air, which reduces the occurrence of haze. Therefore, the absorbency of the stone can also be used to improve the environment.

Water weight (buoyancy of the stone) The area of the bottom of the cup.

According to Pascal's law, the pressure in a liquid is proportional to the depth of the liquid, i.e., the pressure p = gh, where is the density of the liquid, g is the acceleration due to gravity, and h is the depth of the liquid.

When a stone is placed in water, the pressure at the location of the stone is also added to the pressure of the weight of the stone on the slag produced by the liquid. Therefore, if you want to ask for the pressure of the water on the bottom of the cup, you need to know the depth of the liquid and the density of the liquid.

Assuming that the depth of the liquid is lead and the density is , and the weight of the stone is w, then the pressure at the bottom of the cup is:

p = gh + w/a

where a is the area of the bottom of the cup, and w a represents the pressure exerted by the stone on the liquid.

It should be noted that the weight w needs to be converted to mass m when calculating, i.e.:

m = w/g

Then multiply the mass m by the gravitational acceleration g to get the pressure w a generated by the stone, and finally the pressure of water on the bottom of the cup can be obtained.

Why does putting stones in a cup with water rise and water in a cup with stones.

Hello, it is a pleasure to serve you and give you the following answer: when you put a stone in a cup with water, the water level will rise, and when you put water in a cup with stones, the water level will not rise. This is because the volume of a stone is smaller than that of water, and when a stone is placed in the water, the volume of the water decreases, which raises the water level.

When water is placed in a cup with stones, the volume of water will not become smaller, and the water level will not rise, because the volume of the stones has occupied a certain space. The solution to this problem is to put the pebbles in the cup that holds the water away, you can put the pebbles in the cup first and then pour the water into the cup, so that the water level can be raised. And when you put water in a cup with stones, you can pour water into the cup first, and then put the stones into the cup, so that the water level does not rise.

The workaround and practical steps for this problem are:1When placing a stone in a cup containing water, first put the stone into the cup, and then pour water into the cup; 2.

When putting water in a cup with stones, pour the water into the cup first, and then put the stones into the cup. The relevant knowledge of this question is: the volume of a stone is smaller than that of water, and when a stone is placed in water, the volume of water becomes smaller, which raises the water level; And when water is placed in a cup with stones, since the volume of the stones already occupies a certain space, the volume of the water will not become smaller, so the water level will not rise.

According to P= Gh, the pressure of water is only related to the density and height of water, and has nothing to do with the volume and mass of water

Filled with water: The gravity of the overflowing water is equal to the buoyancy of the wooden block, if the wooden block floats, then the gravity of the wooden block is equal to the buoyancy of the wooden block, that is, if the wooden block floats, the gravity of the water is equal to the gravity of the wooden block, and the liquid level does not rise, so the pressure and pressure are unchanged.

Not filled with water: The liquid level is raised, so the pressure at the bottom of the cup becomes larger, and the bottom area remains the same, so the pressure at the bottom of the cup becomes larger, in addition, the pressure of the cup on the table also increases, because S does not change, so the pressure of the cup on the table also increases.

What is full does not change, and what is not full changes.

Because the level of liquid that is full has not changed, the level of liquid that is not full has risen.