Linked Questions

0
votes
1answer
122 views

Is the gravitational field an illusion, a by-product of geometry? [duplicate]

The principle of general covariance from the Equivalence Principle (EEP) tells us that there is no way in principle to locally distinguish between an inertial acceleration and the effects of a ...
0
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0answers
100 views

Gravity as a fundamental force [duplicate]

In Dr.Einstein's theory of General Relativity-- he goes to great lengths to explain how the force of gravity is merely an illusion and in the case of the falling apple-- it is the earth accelerating ...
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votes
0answers
71 views

Why is gravity still considered a fundamental force? [duplicate]

Einstein's geometry is often explained to the layman (me) as "Mass tells spacetime how to curve, spacetime tells mass how to move". It seems to me then, that what we call gravity is explained by the ...
0
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0answers
47 views

After all “Is the gravity a force or not?” [duplicate]

I see in some gifted physical texts great discovery that "The gravity is not a force, its manifest of spacetime curvature" And in others i see "the major problem of unifying the extra weak force of ...
57
votes
6answers
12k 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 ...
4
votes
6answers
3k 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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votes
3answers
2k views

Mass curves spacetime, there is no such thing as gravity?

It is said that there is no such thing as gravity. Mass/energy curves spacetime and a body follows this curvature so gravity is basically the geometry of spacetime. If there is no force of gravity why ...
8
votes
4answers
263 views

Why shouldn't gravity be a force?

Why shouldn't gravity be a force? I am interested to know the reasons why we shouldn't treat gravity as a force in, for example, General Relativity. Won't we be able to model it accurately by ...
0
votes
2answers
518 views

General Relativity, Newtonian Mechanics and Gravity

Gravity is considered to be the curvature of spacetime by Einstein and a force by Newton. So are both notions equally correct or Einstein's perspective completely replaced Newton's thinking?
3
votes
2answers
256 views

What kind of fundamental interaction is gravitation?

Einstein showed that gravitation is not a force but a effect caused by curvature of space time. Then why does theories of quantum gravity treats gravitation as one of fundamental force?
2
votes
4answers
155 views

Confusion regarding gravity not being a force

In high school, it was taught that formula for describing circular orbital velocity around a central body is derived by equating Newton's law of gravity with the centripetal force formula (under the ...