Does atmospheric pressure have an effect on the weight of an object

It has an effect on any object and is negligible for substances that are much denser than air.

But for objects such as hydrogen balloons, whose average density is less than or close to the density of air, it is necessary to calculate.

This is the knowledge of junior high school physics, and the force generated by the difference in atmospheric pressure is buoyancy, which is related to the buoyancy nature in water.

Same, so all objects in the air are necessarily affected by the buoyancy of the air, but this effect is due to emptiness.

Air buoyancy cancels out part of gravity without changing the object itself.

As for the amount of buoyancy, it depends on the volume of air that the object displaces (occupies), for example, an object is displaced.

1 cubic meter of air, then the buoyancy of the air on this object is equal to the weight of this 1 cubic meter of air.

The formula is: F float = g row (this formula can also calculate the magnitude of buoyancy in the water).

If the inside is solid, it doesn't matter, but if there is a gap in it (e.g. a basketball) If the air pressure inside the basketball is less than the atmospheric pressure, then it will be smaller than the actual mass (colloquially speaking, the ball becomes lighter).

If the air pressure inside the basketball is greater than the atmospheric pressure, then it will be more massive than it actually is, (i.e., the ball will become heavier).

Of course, the above mentioned lighter mass does not mean that the mass of the object has really become lighter, but that it has become lighter with a tool scale. Of course, the change in quality is generally not felt by me.

There is no impact. Because there is equal atmospheric pressure all around.

All offset.

It has to have an impact on the weight, but it is very, very small and generally ignored.

Atmospheric pressure is related to the gravitational force of air, because although air is something that cannot be seen or touched, it is also an object, it also has weight, and it is also affected by the gravitational force of the earth. This gravitational force is pressed perpendicular to the earth's surface, which becomes atmospheric pressure.

The atmospheric pressure per unit area is the atmospheric pressure, which is measured by the Torricelli experiment, and the atmospheric pressure is very large, because there is atmospheric pressure inside and outside the human body, so the person is not crushed.

Atmospheric pressure changes with altitude.

Relationship: Atmospheric pressure decreases with altitude, and its variation is uneven.

Principle: The density of the air layer above the earth is not equal, the air near the surface layer is denser, and the air in the upper layer is thin and less dense Since the atmospheric pressure is generated by air gravity, where the height is large, the height of the air column above it is small, and the density is also small, so the higher the distance from the ground, the smaller the atmospheric pressure

Within 3000 m above sea level, the atmospheric pressure decreases by about 100 Pa for every 10 m of ascent, and about 1 mmHg for every 12 m of ascent, within 2000 m above sea level.

The air on the ground has a very wide range and is often referred to as "atmosphere". More than 200 kilometers above the ground, there is still air. Although its density is small, the pressure of such a high atmospheric column on the ground is still very high.

The human body does not feel the pressure of air pressure in the atmosphere, because the internal and external parts of the human body are affected by air pressure at the same time and happen to be equal.

How high can the atmospheric pressure support the water column:

According to the Torricelli experiment, it can be known that the value of the atmospheric pressure is equal to the pressure of the mercury column at a height of 76 cm, that is:

And the density of water is 1 0 103kg m3, so.

In general, it is roughly assumed that the atmospheric pressure can support a column of water about 10 meters high.

Siphoning: A phenomenon in which a tall container flows through a curved tube over a high place into a lower container (as shown in the figure). It occurs when the curved pipe (siphon) is filled with liquid, and the pressure of the liquid column above the higher liquid level does not exceed the atmospheric pressure.

For example, car drivers often use a siphon to suck out gasoline or diesel from an oil drum; In Henan and Shandong, siphons are often used to divert water from the river to the embankment to irrigate farmland; In daily life, such as changing the water in a fish tank, it is a siphon phenomenon that uses atmospheric pressure.

Air pressure has nothing to do with gravity, there is also air pressure without gravity. But the atmospheric pressure varies with gravity.

The atmospheric pressure is formed by gravity, and the air is pressed downward under the action of gravity.

Buoyancy equals gravity why is it not related to atmospheric pressure Not both forces are downward, the pressure in gases and liquids is in all directions, and the pressure in the same position is equal in all directions, and for the lower part of the object, the pressure is upward.

It's all fluids, and you can compare it to liquid pressure, which is generated by gravity, but the way it is calculated seems to be completely different.

Not both forces are downward, the pressure in gases and liquids is in all directions, and the pressure in the same position is equal in all directions, and for the lower part of the object, the pressure is upward.

Atmospheric pressure is the pressure of gravity.

Summary. Air has weight, and air pressure is a good example, and air pressure refers to the weight of air per unit area, but its weight is negligible.

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Hello, according to the Archimedes principle, the loss of air pressure has an effect on weight (not mass), but it is so small that it is completely negligible.

Does the cement tanker have a weight on the air pressure?

It should be a slight increase, but this weight is very small for the whole car, so the weight increases slightly.

In other words, air pressure has weight.

Air has weight, and air pressure is a good example, and air pressure refers to the weight of air per unit area, but its weight is negligible.

The change in atmospheric pressure is related to altitude. Atmospheric pressure is generated by the gravitational force of the atmosphere, and the higher above the ground, the thinner the atmosphere, and the lower the atmospheric pressure should be. However, because the density of the air in relation to the gravity of the atmosphere varies unevenly with altitude, the atmospheric pressure decreases with altitude.

Changes in atmospheric pressure are also related to the weather. The atmospheric pressure in the same place is not exactly the same at different times. We know that water vapor is less dense than air, and when there is more water vapor in the air, the air density becomes less and the atmospheric pressure decreases.

Generally speaking, the atmospheric pressure on a rainy day is smaller than that on a sunny day, and a sudden decrease in atmospheric pressure on a sunny day is a precursor to impending rain. It has been raining for several days and the atmospheric pressure has become stronger, so it is expected to clear soon. In addition, changes in atmospheric pressure are also related to temperature. Because the air density becomes less when the temperature is high, the atmospheric pressure is lower when the temperature is higher than when the temperature is low.

The pressure exerted by the atmosphere on the object immersed in it is called atmospheric pressure, or atmospheric pressure or barometric pressure for short.

Causes of atmospheric pressure:

1. Atmospheric pressure refers to the pressure generated by the air at a certain location on the earth. The air on the Earth's surface is subjected to gravity, which creates atmospheric pressure

2. Both gases and liquids are fluid, and their pressures are similar, the atmospheric pressure is in all directions, and the atmospheric pressure in all directions is equal in the same position. However, because the density of the atmosphere is not uniform, 3. The pressure of the gas sealed in a certain container is generated by the continuous collision of a large number of gas molecules in irregular motion against the container wall, and its size is not determined by the gravity of the enclosed gas

(1) When an object is placed on a horizontal plane, it is acted upon by two forces: a vertical downward gravitational force and a vertically upward supporting force f, which is g since the object remains at rest

2) According to the pressure formula p=f s

p＝f/s＝g/s

where is the pressure, which is equal to the magnitude of gravity g, and s is the area of the force, which is the base area of the object.

Matter! Atmospheric pressure is due to gravity! The gravity we usually talk about refers to the attraction of the earth to objects, so the greater the attraction of the earth to the atmosphere, that is, the greater the gravity of the atmosphere, just as the greater the gravity of the object on the table, the greater the pressure of the object on the table, the greater the gravity of the atmosphere, the greater the atmospheric pressure on the surface!

Matter! Atmospheric pressure is created because of the gravitational force of the atmosphere.

Atmospheric pressure is the pressure of the air on the earth's surface due to gravity, and without gravity, there is no atmospheric pressure.

Atmospheric pressure is related to the gravitational force of the atmosphere covering the earth's surface (if the earth's surface area remains the same), if the amount of the atmosphere does not change, the gravitational acceleration decreases to one-tenth, and the atmospheric pressure will also decrease to one-tenth; But the ability of celestial bodies to bind the atmosphere is related to the gravitational acceleration on its surface, and when the gravitational acceleration decreases, a lot of the atmosphere will drift into space! The amount of the atmosphere is reduced, and the atmospheric pressure is much lower than one-tenth of what it used to be!

For example, the Moon, its gravitational acceleration is 1 6 times that of the Earth, but there is almost no atmosphere on its surface!

A large number of molecules that make up the gas are in a never-ending irregular thermal motion, which is a prerequisite for generating pressure.

On a unit area, a large number of gas molecules frequently hit the wall of the device to produce a continuous and uniform pressure, which is the macroscopic pressure.

The microscopic factors that determine the pressure of a gas are the average kinetic energy of the molecule and the density of the gas.