# Linked Questions

27 questions linked to/from Why would spacetime curvature cause gravity?
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### How does the spacetime curvature cause an object to attract towards the ground? [duplicate]

An object moves at a constant speed relative to the local spacetime but due to the warped spacetime it appears as if accelerating. How does spacetime curvature exactly causes this effect?
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### Why does a stationary object start moving if there is no force acting on it in general relativity? [duplicate]

I understand that gravity is not a force, but the function of curved space time. But what gets an object in motion if no force acts on it? For example, if I roll a ball, its path will curve towards ...
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### Why do we fall towards earth and not hover during free fall as per General relativity? [duplicate]

So this is what I understand from General Theory of Relativity: A body freely falling towards earth's surface would be in an inertial frame of reference (air removed) with zero net force acting on it. ...
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### In general relativity, what makes an object released in a gravitational field START to fall? [duplicate]

I understand why a released object moves as it does once it has started moving, and why all objects fall at the same speed, removing other effects. But I don't see why the curvature of space would ...
3answers
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### If gravity is simply a curvature of space, why does it accelerate objects? [duplicate]

I understand how an object moving through space would be affected if gravity were a curvature of space as opposed to being a force. However, I do not understand why this creates a "pull" on an object. ...
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### Why time is attached with space and how apple fall according to Einstein? [duplicate]

As per Einstein space is flexible it means it can be curved with mass but I am not able to visualize the relationship between space and time (space-time continuum). According to Newton Apple falls ...
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### Is Earth flat according to Einstein? [duplicate]

I didnt understand how to apply general relativity to Earth. If there is no such a thing as gravity but spacetime bending. Can someone just show, send something to read how gravity works in Earth ...
1answer
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### General theory of relativity questions [duplicate]

I do not understand how this theory (the theory of general relativity) would work because gravity is what makes things heavy and weight is what bends things. All of the proof makes it hard to question ...
0answers
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### Reason for gravitational force [duplicate]

What is the reason for the existence of gravitational force between two bodies? Why do we say it as an attractive force? What makes any two objects to attract each other?
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### Shouldn't a cold object feel less gravity? [closed]

The premises for my question are, Gravity isn't a force but curved spacetime "If gravity isn't a force, how does it accelerate objects?" (complicated answer) If the answer below, to the question ...
1answer
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### Why does gravity pull me when I'm not moving?

My question is: Why does gravity pull me towards the earth? I get all the curved spacetime thing but when I'm sat here in my chair I'm traveling through basically the same spacetime as everything ...
1answer
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### How does gravity cause acceleration? Also what means spacetime? [duplicate]

Since gravity only curves spacetime, how does it give kinetic energy to an object eg when an object falls to the ground. Since it only curves spacetime we shouldn't move towards it without kinetic ...
2answers
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### A problem with how curved spacetime explains gravity [duplicate]

I've read quite a few online explanations of how curved spacetime is the reason objects are drawn to each other, and that gravity is an illusion. Most of them follow the same path: explain what ...
1answer
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### How can a particle following a geodesic accelerate?

A particle following a geodesic moves by inertia. Yet typically, we think of movement by inertia as moving at some constant velocity. But a particle in free fall does 'accelerate' i.e. its velocity ...
3answers
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### Can you derive new theories in physics by only looking at the math?

Can you develop new theories in physics by only looking at the maths from past physics concepts? Or does observation of physical reality or converging of physical concepts ALWAYS come first before the ...
6answers
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### From where does gravity get its energy to do work upon an object?

For an object or force to do work, it needs energy. But, from where does the gravitational force get the energy to do work upon, say, a falling object? The gravitational force is doing work upon the ...
2answers
885 views

### Demonstration of General relativity

I've been trying to at least roughly understand gravitation in general relativity, but so far I haven't found a demonstration which I'd find satisfactory. The most common demonstration is ...
2answers
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### How does gravity truly work in the bend of spacetime?

If gravity is caused from the bend in space time from a large mass, why do all objects fall towards earths center and not strait down to below earth? Sorry i am not an expert in any fields just trying ...
1answer
685 views

### Why does two masses with energy attract each other?

I have heard that every mass attract another mass with a force directly proportional to the multiplication of their masses and inversely proportional to the square of distance between them, but newton ...
2answers
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### Gravity and spacetime bending [duplicate]

Something that puzzles me if gravity is just bending of space time near a mass then what is gravitational force? If say two massive bodies were perfectly at rest relative to each other they would ...
3answers
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### How does gravity truly work? [duplicate]

I Am only 12 years old and I'm constantly wondering and trying understand how gravity really works. On YouTube everyone always talks about objects wrapping space time around themselves and uses the ...
1answer
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### What is gravitational energy in general relativity?

In GR the curvature of spacetime "is gravity". This curvature is expressed via the Riemann tensor (or the Ricci tensor + Ricci scalar). The curvature is connected via the Einstein Field Equations with ...
1answer
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### Gravity: Why Do things fall to Earth? [duplicate]

If gravity is in reality spacetime geometry why when I drop an object on the surface of the Earth does it fall to the ground? Does spacetime push it?
5answers
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### How does “curved space” explain gravitational attraction? [duplicate]

They say that gravity is technically not a real force and that it's caused by objects traveling a straight path through curved space, and that space becomes curved by mass, giving the illusion of a ...
1answer
601 views

### Does acceleration of time explain gravity (rather than the other way round)? [closed]

I have a question about interpreting (explaining, even) the general theory of relativity. A common interpretation of GR, as I understand it, is to imagine two-dimensional space represented by ...
1answer
301 views

### Questioning Einstein's view on gravity [duplicate]

Oke, so my mind is blown by Einsteins view on gravity, at least as far as I understand the basics and principles he based his views on. One of the first things that struck me was that most of his ...
3answers
509 views

### Questions about spacetime curvature and gravity

These are some further important queries regarding the question here Why would spacetime curvature cause gravity? Q1. Explain the statement “Everything in spacetime moves at the speed of light”. Is ...