# hydrostatic equilibrium in our sun is the balance between

The structure of the Sun is a matter of balance between the pressure outward and the force of gravity inward: this balance is known as hydrostatic equilibrium. ## What is hydrostatic equilibrium a balance between?

The atmosphere is mainly in hydrostatic balance, or equilibrium, between the upward-directed pressure gradient force and the downward-directed force of gravity.

## What is hydrostatic equilibrium in the Sun?

The structure of the sun adjusts until the gravitational “pull” towards its center is just balanced by the “push” of the gas pressure outward. Fortunately, this results in a very stable state, called hydrostatic equilibrium.

## Does hydrostatic equilibrium refers to the balance between two forces inside a star?

Hydrostatic equilibrium says that there is a balance between two forces at every point within a star. One force is the inward force of gravity. The other force is the pressure in the gas caused by its temperature (recall that the pressure in an ideal gas is proportional to its temperature).

## Where does hydrostatic equilibrium exist in the Sun?

Key Concepts. The Sun’s interior is in hydrostatic equilibrium. Energy is carried away from the Sun’s core by radiative diffusion and convection. The Sun’s interior can be probed by helioseismology.

## Does hydrostatic equilibrium refers to the balance between two forces inside a star?

Hydrostatic equilibrium says that there is a balance between two forces at every point within a star. One force is the inward force of gravity. The other force is the pressure in the gas caused by its temperature (recall that the pressure in an ideal gas is proportional to its temperature).

## What is hydrostatic equilibrium?

The state of a fluid with surfaces of constant pressure and constant mass ( or density) coincident and horizontal throughout. Complete balance exists between the force of gravity and the pressure force.

## What does hydrostatic equilibrium mean in stars?

For the majority of the life of a star, the gravitational force (due to the mass of the star) and the gas pressure (due to energy generation in the core of the star) balance, and the star is said to be in ‘hydrostatic equilibrium’.

## What is hydrostatic equilibrium the balance between?

Hydrostatic equilibrium is a state of balance between gravity, which wants to pull things together, and pressure, which wants to blow it apart.

## What are the two balancing forces in a star?

(2) Which two forces are in balance for a main sequence star? While self-gravity pulls the star inward and tries to make it collapse, thermal pressure (heat created by fusion) pushes outward. These two forces cancel each other out in a main sequence star, thus making it stable.

## What are the two forces in hydrostatic equilibrium?

Hydrostatic equilibrium happens when the pull of gravity is balanced by a pressure gradient which creates a pressure-gradient force in the other direction. The balance of these two forces is known as the hydrostatic balance.

## What does hydrostatic equilibrium inside the Sun mean?

If the Sun (or a star) is in hydrostatic equilibrium, the Sun (or star) is neither expanding nor contracting; it is sitting nicely in some equilibrium configuration. This means that the forces which control the Sun (or star) are precisely balanced. For the Sun (and stars): The Sun is held together by gravity.

## What forces are holding the Sun in equilibrium?

Two forces act on the Sun. One is the inward gravitational pressure of the Sun’s mass. The other is the outward pressure from heat generated in its interior. The Sun remains stable because these two forces are in gravitational equilibrium.

## How would you describe the state of equilibrium of the Sun?

The Sun, like the majority of other stars, is stable; it is neither expanding nor contracting. Such a star is said to be in a condition of equilibrium. All the forces within it are balanced, so that at each point within the star, the temperature, pressure, density, and so on are maintained at constant values.

## What are examples of hydrostatic equilibrium?

The sun is an example of hydrostatic equilibrium. Hydrostatic equilibrium is a situation in fluid mechanics where the outward force exerted by a liquid is equivalent to the inward force acting upon it.

## What is hydrostatic equilibrium in simple terms?

Hydrostatic equilibrium happens when the pull of gravity is balanced by a pressure gradient which creates a pressure-gradient force in the other direction. The balance of these two forces is known as the hydrostatic balance.

## Where does hydrostatic equilibrium exist in the Sun?

It’s all based on the concept of HYDROSTATIC EQUILIBRIUM – the downward force due to gravity (i.e the weight) of the gas must be balanced by the upward thermal pressure of the gas. If these forces were not equal, the star would be collapsing inward or expanding outward.