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### 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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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?