How do you calculate underwater pressure? What is the calculation formula?

1. Calculation method of underwater pressure:

It is measured as a force per unit area. China's legal units of measurement and the International System of Units.

SI).

It's Pascal (PA). 1pa=1n/m2。

1. Atmospheric pressure.

Measurement: Take 76cm of mercury.

The pressure generated by the height of the column (about the height of the water column) is the standard atmospheric pressure.

atm)。In engineering, it is customary to use the pressure of 10m water column height as an engineering atmospheric pressure (at).

2. Measured by liquid column height

Commonly used are mercury height or water column height. The transformation relationship between different units of measurement is: latm = = = = 76mmHg

2. Calculation formula:

p= gh(p is the pressure, is the density of the liquid, the density of water is 1 10 3kg m 3, and g is the acceleration due to gravity.

take n kg, h is the height from the pressure point to the liquid level).

The pressure of the water f = the pressure of the water p the bottom area of the container containing the water s the pressure of the water p = gh The formula is: f = ghs

kilograms cubic meters.

g=10 N kg.

h = depth of water.

Pressure. In the International System of Units, the unit of pressure is Pascal (abbreviated as Pa), 1 Pa = 1 Newton m2. The atmospheric pressure at sea level altitude under standard conditions (temperature t = open (k), air density = kilogram cubic meters) is 101325 Pa, which is called standard atmospheric pressure.

Industrially, 1 kgf cm2 is used as 1 engineering atmosphere, and its value is Pa. In meteorology, 106 dynes cm2 is defined as 1 bar, and 1 bar = 105 Pa, which is close to 1 standard atmosphere.

Pressure. In physics, pressure refers to the force that occurs on the contact surface of two objects, or the perpendicular force of a gas on the surface of a solid and a liquid, or the perpendicular force of a liquid on a solid surface. The pressure of a fluid is related to parameters such as temperature, density, etc.

The ideal gas pressure p= rt, where r is the gas constant, which is related to the type of gas, and the air r = joules (kg·k) [j (kg·k)] The liquid pressure increases with density.

Formula. Pressure = Pressure Area under pressure (p=f s);

Pressure = pressure * force area (f = ps).

The formula for calculating the underwater pressure is p=pgh. Regardless of the type of water, it is only related to the density, the formula: p=pgh, p refers to the pressure, p refers to the density of the liquid, g refers to the depth of the liquid.

The formula for calculating water pressure is as follows: p= gh.

Water pressure refers to the pressure of water.

When using a container to hold water, the water is subjected to gravity, and the pressure equivalent to that weight is applied to the walls and bottom of the container.

The water contained in the container has a pressure effect on the side and bottom surface, and the pressure is always perpendicular to the contact surface for any direction.

And when the depth is the same, the pressure is also the same; The deeper the liquid, the greater the pressure.

p = gh (p is the strength of the bending ridge oak, is the density of the liquid, the density of water is 1 10 3kg m 3, g isGravitational accelerationtake n kg, h is the height from the pressure point to the liquid level).

1. Atmospheric pressure.

Measurement: Take 76cm of mercury.

The pressure generated by the height of the column (about the height of the water column) is the standard atmospheric pressure.

atm)。In engineering, it is customary to use the pressure of 10m water column height as an engineering atmospheric pressure (at).

2. Measured by liquid column height

Commonly used are mercury height or water column height. Different units of measurement.

The transformation relationship between is latm = = = = 76mmHg.

Generally, the water pressure of tap water is about kilograms, and 1MPa is equal to 10 kilograms of water pressure. 1MPa = 10kg square centimeter, MPa megapascals is the new unit.

According to the tap water supply specification: tap water, generally recognized as buried next to the meter, the national regulation of the end of the pipe network pressure is, more intuitively, it is equivalent to a standard atmospheric pressure, the end of the pipe network pressure is, equivalent to the faucet from the water supply tower (pool) has a height of 14 meters. Therefore, the higher the location of the home, the lower the water pressure.

The formula for calculating pressure in water is: p gh, p pressure, liquid pressure, g gravitational acceleration, h depth of liquid from surface.

The formula for calculating pressure in water is that the pressure is equal to the density of the liquid multiplied by the density of the water multiplied by the acceleration due to gravity multiplied by the height from the pressure point to the liquid surface. Buoyancy is the pressure difference between the upper and lower faces of an object. The pressure of water can also be calculated by measuring the height of the liquid, the common being mercury height or water column height.

Now, with the development of science and technology, water pressure is widely used in the industrial field, and water pressure is being used in many places.

Water pressure. The term "architectural posture burial" refers to the normal effect of water on the surface of buildings and structures that water comes into contact with when it is stationary or flowing. A force that acts perpendicular to its interface and points towards the surface of action, where the interface can be a split interface between two parts of the liquid or a contact surface of a liquid with a solid or gas.

The pressure per unit area is called pressure.

Hydrostatic pressure is characterized by the fact that the pressure on each surface with different orientations through a point is small and equal to each other. The hydrostatic pressure is a scalar function of the coordinates of the spatial point.

In the homogeneous static liquid under gravity, the pressure at any point is p p0 h. where p0 is the pressure of the liquid level, h is the depth of the point below the liquid level, is the bulk density of the liquid, and h is the weight of the liquid column per unit area from the point to the liquid level. <>

p=ρgh。

The formula for calculating the pressure of a liquid is p= gh. It can be seen that the size of the liquid pressure only depends on the type (i.e. density) and depth of the liquid, and has no direct relationship with the mass and volume of the liquid. When calculating the pressure of water, it is only necessary to substitute the density of water into the formula and calculate it based on the depth.

Because the liquid is fluid, it exerts pressure not only on the bottom of the container, but also on the sidewalls that restrict the flow. Therefore there is pressure inside the liquid in all directions, and the pressure is equal in all directions at the same depth. For the same liquid, the deeper the depth, the greater the pressure.