Constant acceleration of gravity

In summary, the rotation of an object can be explained by centrifugal force and gravity. The closer the planet is to its parent star, the higher its density due to the collapsing of the solar nebula and the effects of solar winds. However, there are some exceptions to this theory, such as exo-planets with high densities close to their star and "hot" gas giants that have migrated to a closer orbit.
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quincy harman
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It's a combination of centrifugal force and gravity that allows constant acceleration of a rotating object? also is it just coincidence that the most dense objects are near the sun?
 
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quincy harman said:
also is it just coincidence that the most dense objects are near the sun?

no its not, as the sun formed and started shining and the solar wind started radiating out from the sun, it blew much of the lighter
material further out into the outer reaches of the of the early solar system

Note how the outer planets are gas giants Jupiter, Saturn, Uranus and NeptuneDave
 
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quincy harman said:
It's a combination of centrifugal force and gravity that allows constant acceleration of a rotating object? also is it just coincidence that the most dense objects are near the sun?
I am not sure what your asking in your first question. An object that is rotating will continue to rotate unless acted upon by an external force (Newton's first law of motion). In order to obtain "constant acceleration" you have to apply constant thrust. Also, enough centrifugal force can nullify the effects of gravity. For example, if Earth had a rotation of only 2 hours, 15 minutes per day (~18,000 mph), the centrifugal force would overcome Earth's gravity and break the planet apart.

As to your second question, the prevailing theory is that as the solar nebula collapses it gradually begins to rotate and the heavier elements in the nebula are drawn closer to the center of this rotating mass by gravity. Therefore, the planets with the highest density should be closest to their parent star. Particularly, those planets that are closer to their star than the star's snow line (a.k.a. frost line). Once the protostar reaches an internal core temperature of ~15 million degrees Kelvin, hydrogen fusion begins and it becomes a star. When that happens, solar winds are created that clear out the majority of the remaining gas in the solar system.

It should be noted that we have found solar systems that fly in the face of prevailing theory. Such as a 10 Jupiter mass exo-planet orbiting only 1 AU from its parent Type F5 star. And other solar systems where "hot" gas giants are much closer to their parent star where it should be impossible for them to form. The only explanation is that they formed beyond the snow line of the star and somehow migrated into a much closer orbit.
 

What is constant acceleration of gravity?

Constant acceleration of gravity is the rate at which an object falls towards the ground due to the force of gravity. It is approximately 9.8 meters per second squared (m/s²) on Earth.

How is constant acceleration of gravity calculated?

The equation for calculating constant acceleration of gravity is a = g = 9.8 m/s², where "a" represents acceleration and "g" represents the force of gravity. This equation is derived from Newton's second law of motion.

Is constant acceleration of gravity the same everywhere?

No, constant acceleration of gravity varies depending on the mass and distance of the object from the center of the planet. It also varies slightly at different locations on Earth due to factors such as altitude and latitude.

What is the significance of constant acceleration of gravity?

Constant acceleration of gravity is a fundamental concept in physics and is used to explain the motion of objects falling towards the ground. It also plays a crucial role in understanding the laws of motion and the behavior of objects in the universe.

How does constant acceleration of gravity affect objects of different masses?

Regardless of the mass of an object, all objects will accelerate towards the ground at the same rate due to the force of gravity. This means that a feather and a brick, when dropped from the same height, will reach the ground at the same time.

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