What two forces are in equilibrium or balance in a star?

What two forces are in equilibrium or balance in a star?

Stars live out their lives in an exquisitely detailed equilibrium, or balance, between two powerful forces — outward pressure and the inward pull of gravity. The gravity force is a property of the mass of the star, and in order to support itself against gravity the star generates energy in its core.

What are the 2 forces that act on a star *?

Gravitational forces act to contract the star. Fusion reactions and heat convection act to expand the star. The two forces are balanced and the star remains stable in size and reactions.

What are two main forces that act on gases in a star Brainly?

Pressure and gravity are the two force act on the stars. ✴️ Pressure due to fusion reactions pushes outwards.

Which two forces oppose each other in a star?

Hydrostatic Equilibrium Two opposing forces are at work within a star: Gravity pulling inward wants to make the star contract. Pressure pushing outwards wants to make star star expand.

What two forces are constantly fighting against each other in a star?

A star’s life is a constant struggle against the force of gravity. Gravity constantly works to try and cause the star to collapse. The star’s core, however is very hot which creates pressure within the gas. This pressure counteracts the force of gravity, putting the star into what is called hydrostatic equilibrium.

What are the forces that keep stars in stable equilibrium?

The inward force of gravity is balanced out by the outward force of pressure to keep the star stable. This stable balance, the outward pressure of hot gases balancing the inward pull of gravity is called the hydrostatic equilibrium.

What are the two forces that must remain in balance for a star to remain a main sequence 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 major forces that act on a star?

What are the two major forces that act on a star? Pressure and gravity. Pressure due to fusion reactions pushes outwards. Gravity pulls inwards to keep the star in equilibrium. The mass of star causes gravity which pulls inwards. Pressure and temperature created by fusion of hydrogen to helium push it outwards.

What does it mean when a star is in equilibrium?

The term equilibrium does not mean that there isn’t any change in the star. It just means that there is not a net overall change in the star. In a stable star, the gas pressure pushing out from the center is equal with the gravity pulling atoms inward to the center – when these forces are equal, the star is at equilibrium.

How does the force of gravity keep a star stable?

The inward force of gravity is balanced out by the outward force of pressure to keep the star stable. This stable balance, the outward pressure of hot gases balancing the inward pull of gravity is called the hydrostatic equilibrium.

What causes pressure and gravity in a star?

Pressure and gravity. Pressure due to fusion reactions pushes outwards. Gravity pulls inwards to keep the star in equilibrium. The mass of star causes gravity which pulls inwards. Pressure and temperature created by fusion of hydrogen to helium push it outwards.