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GRAVITY!!!!
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When does the protostar become balanced?
A protostar becomes balanced when the gravitational forces pulling matter inward are balanced by the outward pressure due to nuclear fusion at its core. This marks the transition from a contracting protostar to a stable star in the main sequence phase of its lifecycle.
How central forces support the stability of this Universe?
Central forces, such as gravity, act towards a focal point, which helps in maintaining the stability of the universe by governing the motion of celestial bodies in a predictable manner. These forces provide a balance between the inward force of attraction and the outward force of momentum, helping to keep objects in orbit around each other without flying off into space. The stability provided by central forces allows for the formation and maintenance of galaxies, stars, and planets.
What forces are opposing one another throughout the life of a star how do they influence the various stages in life cycle of a star?
The two opposing forces are gravity, pulling the star in and the outward force from the ongoing nuclear fusion reactions. As the star approaches the end of it's life, changes in the reactions occur, which cause the forces to balance out in different ways, changing the size of the star.
What keeps the sun in equilibrium?
The Sun maintains equilibrium through a balance between gravitational forces and the outward pressure created by nuclear fusion in its core. Gravity acts to pull the Sun's mass inward, while the energy generated from fusion reactions converts hydrogen into helium, releasing immense amounts of energy that create radiation pressure pushing outward. This delicate balance ensures that the Sun remains stable over long periods, preventing it from collapsing or expanding uncontrollably.
What do you call a smaller celestial body that orbits a planet?
Objects orbiting a planet called satellites. They can be natural satellite like Earth's Moon or artificial satellites such as the International Space Station or different communication satellites made by and set on orbit by men.
What do the outward and inward forces acting on a star have to do with it's size?
The outward force is the pressure generated by nuclear fusion in the star's core, which counteracts the inward force of gravity trying to compress the star. The balance between these forces determines the size and stability of the star. If the outward pressure exceeds the gravitational force, the star can maintain its size and stability.
What does the outward and inward forces on a star have to do with its size?
The outward forces on a star, primarily generated by nuclear fusion in its core, counterbalance the inward gravitational forces trying to collapse the star. The balance between these forces determines the star's size and stability; if the outward pressure increases (e.g., from increased fusion due to higher core temperatures), the star expands. Conversely, if the inward gravitational force becomes stronger (e.g., from a depletion of nuclear fuel), the star contracts. Thus, the interplay of these forces is crucial in defining a star's size and evolutionary state.
What are the names of the forces that are push forces?
The two types of push forces are tension and compression. Tension forces act to pull an object outward, while compression forces act to push an object inward.
For the sun to be stable the inward and outward forces within the sun must be?
balanced. The inward force is gravity, which wants to collapse the sun, while the outward force is generated by nuclear fusion in the core which produces energy and heat, preventing collapse. These forces balance each other, keeping the sun stable.
What is the reaction force of the gravitational force by earth on a satellite orbiting earth?
According to Newton's Third Law, there is a pair of forces: Earth attracts satellite; satellite attracts Earth. It really doesn't matter which of the two forces you call the "reaction force".
What forces continually changes a satellites direction?
That's the mutual gravitational force of attraction between the satellite and the central body that it's orbiting.
What is the difference between centripetal and centrifugal forces?
Centripetal forces are inward forces that keep an object moving in a circular path, while centrifugal forces are outward forces that act in the opposite direction, pushing objects away from the center of rotation.
What forces are at war within a star?
A star is the equilibrium of the outward force a continuous fusion explosion versus the inward force of the gravity of its huge mass.
What provides the forces that causes the centripetal acceleration of a satellite in orbit?
When something is moving in circular motion there are two forces that concern the object, excluding forces affecting the motion of the object going around the circle as these would not make the acceleration constant, the force that pushes it inwards towards the centre of circle and the force that pushes it outwards towards the circle, the gravitational field from the mass at the centre of the orbit will provide the inward force, pulling the object inwards towards the centre, and the weight of the satellite will push it outwards towards the edge of the circle Correction- there is only one force- gravity- acting on a satellite in orbit. If it weren't for gravity, the satellite would fly off in a straight line. There is no outward pushing force.
What are the forces acting in equilibrium within the sun?
In the Sun, the forces of gravity pulling inward are balanced by the outward pressure from nuclear fusion reactions in the core. This equilibrium maintains the Sun's stable size and temperature.
When the outward force due to fusion and radiation balances with the inward force of gravity a star is said to be experiencing what?
When the outward force due to fusion and radiation balances with the inward force of gravity, a star is said to be in a state of hydrostatic equilibrium. This balance between the forces maintains the star's stability and prevents it from collapsing or expanding uncontrollably.
What two forces are balancing which give the sun it's spherical shape?
The sun's spherical shape is primarily maintained by two balancing forces: gravitational force and gas pressure. Gravity pulls the sun's mass inward, while the intense pressure generated by nuclear fusion reactions in its core pushes outward. This equilibrium between the inward pull of gravity and the outward push of gas pressure results in a stable, spherical structure.
