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spinning head
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I'm apologize if this has already been adressed in other posts, but what is gravity. I know that it is the attractive force between masses, but what causes this attraction?
but what causes this attraction?
Originally posted by spinning head
I'm apologize if this has already been adressed in other posts, but what is gravity. I know that it is the attractive force between masses, but what causes this attraction?
Originally posted by chroot
Arc_central,
Don't post your crackpot nonsense in this forum, ESPECIALLY not in response to a bona fide question.
- Warren
Well, there is always the warping of space-time like a bowling ball on a trampoline (except in 3d). But then, is that just a model that works or a real representattion of a physical reality? And that still of course doesn't explain HOW mass warps space.Originally posted by Integral
Good question. Unfortunatly Physics cannot provide an answer. We can quantify and decribe but we cannot explain why.
I don't like this model. You have to assume gravity exists in the model in order for other objects to be motivated to roll down hill (or even for the bowling ball to warp the trampoline in the first place). If the trampoline is in deep space, there would be no sensible model, and the reason is that the model already assumes gravity exists to show why it exists. You could say that the trampoline is accelerating upwards, and anything on its surface will warp it. This is pretty close to the model of GR, but, it still has the problem of "why is the trampoline accelerating?"Originally posted by russ_watters
Well, there is always the warping of space-time like a bowling ball on a trampoline (except in 3d).
The mathematics of general relativity is identical to that of curved spaces. So visualing tidal forces as a ball on a rubber sheet is often used.Originally posted by russ_watters
Well, there is always the warping of space-time like a bowling ball on a trampoline (except in 3d). But then, is that just a model that works or a real representattion of a physical reality? And that still of course doesn't explain HOW mass warps space.
Gravity is a natural phenomenon that causes objects with mass to attract each other. It is the force that holds the planets in orbit around the sun and keeps objects on Earth from floating away into space. According to Einstein's theory of general relativity, gravity is the result of the curvature of space-time caused by the presence of mass.
The main cause of gravity is the presence of mass. The more mass an object has, the stronger its gravitational pull. This is why larger objects, such as planets, have a stronger gravitational pull than smaller objects, such as rocks. Additionally, the closer two objects are, the stronger their gravitational attraction will be.
Gravity plays a crucial role in our daily lives. It keeps us on the ground and prevents us from floating away. It also affects the tides, helps plants grow, and allows us to use tools like scales and measuring tapes. Without gravity, life as we know it would not be possible.
While we have a good understanding of how gravity works, there are still some unanswered questions. For example, scientists are still trying to understand how gravity fits into the framework of quantum mechanics. They are also trying to determine the nature of dark matter, which is thought to make up a large portion of the universe's mass and has a significant influence on gravitational forces.
Scientists use various tools and techniques to study and measure gravity. Some of these include pendulums, accelerometers, and gravimeters. They also use mathematical equations, such as Newton's law of universal gravitation and Einstein's theory of general relativity, to make predictions and explain the behavior of gravity.