Question

people living in Brazil and Argentina countries on the lower paath mein chalega off the globe do not fall​

Answer 1

Real answer : Gravity is then the physical connection between spacetime and matter that causes a curvature of spacetime. Here a curvature of spacetime is the same as a geometry of spacetime. A most remarkable feature of general relativity is that it regards a geometry of spacetime as a new physical entity, with degrees of freedom and a dynamics of its own.[2]

An extreme example of a curvature of spacetime (or a geometry of spacetime) is a black hole, from which nothing—not even light—can escape once past the black hole's event horizon.[3]

The traditional definition of gravity is that given by Newton in 1687, who defines it as a "centripetal force by which bodies are drawn towards a point as to a centre".[4] In explaining the force of gravity, he gives examples of bodies that tend to the centre of the earth and planets that "are perpetually drawn aside from the rectilinear motions, which otherwise they would pursue, and made to revolve in curvilinear orbits."[4]

Current models of particle physics imply that the earliest instance of gravity in the Universe, possibly in the form of quantum gravity, supergravity or a gravitational singularity, along with ordinary space and time, developed during the Planck epoch (up to 10−43 seconds after the birth of the Universe), possibly from a primeval state, such as a false vacuum, quantum vacuum or virtual particle, in a currently unknown manner.[5] Attempts to develop a theory of gravity consistent with quantum mechanics, a quantum gravity theory, which would allow gravity to be united in a common mathematical framework (a theory of everything) with the other three fundamental interactions of physics, are a current area of research.

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