Energy cannot be created or destroyed on channelled/ converted they say?

Question

but what about gravitational energy??, this must be the most fundamental and crucial force in our universe as it gave rise to our current universe, gave rise to all galaxies, gave rise to all planets and will eventually destroy ALL again.
Once all that is, is once again in that singularity and all laws break down these forces will cease to be and (providing you believe in a cyclitic universe) it will all start again.
However gravity will always be there (potentially) as it is the mere effect one mass has upon another, even the singularity will have a gravitational effect on another body.
I think i have lost track of what i am asking, i do that a lot!!! i guess that i am saying that if you introduce a mass/ increase the mass of an existing body you will CREATE more gravitational energy, and the question is; does that contradict the 'you cannot create or destroy energy' law (if it is a law).

Answer 1

I kind of get where you are going. I struggle with gravity a lot. One of my personal hypotheses, which I base on Einsteins "curved space time" theory is that gravity is not actually a fundamental force, but a manifestation of the topology of space-time created by the distortions of mass. I don't have any clue how to test my hypothesis, but in my mind it makes sense.

Answer 2

The law of conservation of matter and energy states that matter and energy are interchangeable, i.e., nothing is ever 'lost'.

There is some modern dissention in philosophical circles regarding the veracity of this contention -- but based on this law gravitational (like all other energy) is fixed in the universe and is interchangeable with matter in chemical reactions.

The Law of the Conservation of Matter and Energy states that matter cannot be created out of nothing, nor can it be destroyed so gravitational energy falls within it's purview.

String theory is a unified theory of the universe postulating that fundamental ingredients of nature are not zero-dimensional point particles but tiny one-dimensional filaments called strings. String theory harmoniously unites quantum mechanics and general relativity, the previously known laws of the small and the large, that are otherwise incompatible. Often short for superstring theory.

If you introduce a mass or increase the mass of an existing body creating more gravitational energy the law of conservation of matter and energy has not been contradicted. You just haven't stated from where the (additional) mass originates.

Answer 3

With the Big Bang, particles are hurled through space and settle in clusters due to the gravitational pull between the particles in the cluster. Gravity did not create the Big Bang, something else did. A very dense unity became the less dense elements that we now know. Nothing has been created from the first instant after the Big Bang.

When the universe finally implodes to a unity, the substantial amount of mass will result in the celestial bodies being pulled together due to their own masses towards a certain central point based on the proportion of masses. When they are very close to one another, the gravitational force will be extremely high, and this will result in a sudden collapse of everything towards each other and into a very dense unity. Nothing has been destroyed.

My guess w.r.t. what happened just before the Big Bang and just after the Final Collapse...? Well, it could be that everything's merely a cycle of expansion from dense to less dense followed by a collapse from less dense to dense. Nothing's created or destroyed.

Answer 4

First off, you are missing a very fundamental point. Energy (Newton-meter) is not equal to gravitational force (Newton). So you cannot compare gravitational force to energy in the manner you described above. If you consider the distance between two objects, then you can say there is potential energy.

Also, you do realize that it costs energy to increase the mass of an object right? So by putting in energy, you are getting energy out of it (in the form of gravitation).

You will spend a lot more energy to increase its mass than you will get out due to gravitaitonal forces.

Answer 5

thats a lot of long answers!
to put it in a short answer, gravity may have energy BUT you have to give an object 'potential' energy to use it. thats the same anywhere in the universe.
but, if you can change and objects gravity or even reverse it then you are onto something interesting!

by the way, if you find a way to tap gravity as an energy, im in!

Answer 6

maybe because of the energy it would take to create or increase the mass?

i don't really know... its a tricky one.

is gravity classed as energy?

Answer 7

you obviously use energy to increase your mass .