Linked Questions

5 votes
2 answers
675 views

Is gravity a force? [duplicate]

If gravity just emerges from the curvature of spacetime, is it actually a force? Why is it one of the 4 fundamental forces of nature?
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  • 22.7k
67 votes
6 answers
16k views

Why do we still need to think of gravity as a force?

Firstly I think shades of this question have appeared elsewhere (like here, or here). Hopefully mine is a slightly different take on it. If I'm just being thick please correct me. We always hear ...
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  • 1,589
13 votes
2 answers
29k views

Do we have theories about why gravity exists/how it works?

For years I have been very fascinated by the "mystery" aspect of gravity. Functionally, we understand it for our applications, but in my (limited to my 3 quarters of undergrad general physics) ...
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  • 267
2 votes
3 answers
11k views

Why and how the masses attract each other?

We generally say that the gravitational force acts between the two bodies of some masses. Why and how that force is generated? What is the main mechanism behind this force?
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4 votes
6 answers
5k views

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 ...
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5 votes
1 answer
974 views

How do non-contact forces work?

One question has been bugging me ever since I started learning physics, the textbooks successfully describe the empirical observations but haven't given any reasoning behind it. What I want to ...
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1 vote
4 answers
695 views

Gravity doesn't seem to work the way it is supposed to [duplicate]

This has been a bit of an awkward question that's been plaguing me ever since I started watching space documentaries on discovery about 10 years ago. I was saving this for the day I would ever meet ...
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  • 29
2 votes
0 answers
894 views

How does matter interact with spacetime? [closed]

It's easy to see how matter interacts with itself but how does it interact with spacetime which is "not" matter? Einstein showed us that mass and energy cause a curvature in spacetime, which intern ...
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  • 1,063
2 votes
1 answer
281 views

Origin of Space-time fabric

I have seen on this site some questions regarding the nature of gravitational-force, and the ways in which it could be interpreted. Most of them mention that the space-time fabric came into existence ...
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  • 502
0 votes
0 answers
55 views

Is there any such thing as gravity? [duplicate]

So I was seeing this documentary and ended up knowing that there is no such thing as gravity. It said that we are not being pulled by Earth but being pushed by the space time curvature acc. to general ...
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