Is earth expanding according to general relativity?

The relativistic point of view would be that the space around the Earth is compressing, but the atoms of the Earth resists this compression. This means that the surface of the Earth is constantly accelerating upwards.

Does acceleration affect spacetime?

Acceleration does not curve spacetime, only gravity does. The equivalence principle does not say that gravity and acceleration are the same, it says that if you choose a region of spacetime small enough that tidal effects can be ignored, then gravity and acceleration will behave the same way.

Does the Earth accelerate towards you?

Earth accelerates towards you So the mass of the Earth relative to you is incredibly large. From Newton’s second law of motion we know that for a given force on an object the acceleration reduces as the mass of the object increases. However the Earth still accelerates towards you even if it is very small.

Does the earth move upwards?

An object moves up or down relative to another object and so the Earth “moving up” is the result of the apple’s frame of reference being adopted. In general relativity, gravity is not a force.

Why does the earth accelerate?

The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth’s rotation).

Why does acceleration slow down time?

A clock that has accelerated ticks more slowly than a clock which has not accelerated so there is time dilation at a higher velocity. So during the acceleration, the clock will start getting slower and slower.

How does mass affect space time?

Gravitational time dilation occurs because objects with a lot of mass create a strong gravitational field. The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.

Does Earth warp spacetime?

Gravity, Einstein asserted, is caused by a warping of space and time—or, in a language we physicists prefer, by a warping of spacetime. The Earth’s matter produces the warpage, and that warpage in turn is manifest by gravity’s inward tug, toward the Earth’s center.

What would happen to Earth’s orbit if the sun collapsed to a black hole?

The Earth and the other planets would not get sucked into the black hole; they would keep on orbiting in exactly the same paths they follow right now…. a black hole’s gravity is no stronger than that of any other object of the same mass.”

Are you accelerating compared to the Center of the earth?

Indeed, every object at Earth’s surface experiences an acceleration of 9.8 m/s², in whatever direction you commonly define as down: towards the Earth’s center. It probably feels that you aren’t accelerating at all, even though the force of gravity is very much a real force acting on your body right now.

Why does the earth move up?

An object moves up or down relative to another object and so the Earth “moving up” is the result of the apple’s frame of reference being adopted. Share Cite Improve this answer

What happens to me while writing this question in general relativity?

According to General Relativity I am being accelerated upwards by planet earth while writing this question. According to general relativity you are being accelerated upward by the normal force. This is exactly what happens in Newtonian mechanics.

Is the earth moving up or down in GR?

If one adopts the Earth’s frame of reference then it is the apple that accelerates towards it. In GR, there is an equivalence to frame of references and so either scenario is correct. An object moves up or down relative to another object and so the Earth “moving up” is the result of the apple’s frame of reference being adopted.

Why can’t we fall in free fall from space?

That’s what happens in general relativity, but the direction they’re walking is the time direction, and the turning is acceleration. It is accelerated from YOUR referential. In free fall you will follow the space-time geodesics. But the earth’s ground prevents you from falling toward the center of mass of the earth.