Can we create Gravity?

[Rocker]

Hi all Engineers!

I have a question for those interested in Physics. Can we have artifical Gravity? Meaning, can we create gravity under test conditions?

With best regards,
ROCKER

[The_Big_K]

Originally Posted by Rocker

Hi all Engineers!

I have a question for those interested in Physics. Can we have artifical Gravity? Meaning, can we create gravity under test conditions?

With best regards,
ROCKER

Of course. There exist a force of attraction between any two masses. This force is called as Gravitational force.

Correct me if I am wrong.

-The Big K-
p.s: Probably this could lead to a discussion on "Can we create zero gravity area on earth?"

[crazy anoop]

is all forces that attracts is gravity?

I dont think so.

I think the force of attraction excerted by heavenly bodies is called gravitational forces.

[The_Big_K]

Originally Posted by crazy anoop

is all forces that attracts is gravity...?

i dont think so...............

i think the force of attraction excerted by heavenly bodies is called gravitational forces

Well, Sir Issac Newton said -

Every object in the Universe attracts every other object, with a force
between any two bodies that is proportional to the product of their
masses and inversely proportional to the square of the distance between
them.

So force of gravity exists between any two objects.

-The Big K-

[crazy anoop]

I dont think so.

So is there any repulsive force among planets?

if a magnet attracts an iron bar, is it gravitational force?

[The_Big_K]

Originally Posted by crazy anoop

I dont think so.

So is there any repulsive force among planets?

if a magnet attracts an iron bar, is it gravitational force?

I'm not sure if there exists a repulsive force among planets. My best guess says "No". We'll need someone to confirm this.

A magnet attracts an iron bar with its Magnetic Force. Read the Newton's law again. If M1 & M2 are small, the gravitational attraction between will be small too. But the fact is, it exists between any two objects.

Someone correct me if I'm wrong.

-The Big K-

[summit.sehgal]

First of all, i must say this is really a fascinating idea...

Now to answere this query,we must look at some of the fundamentalls of Physics...
1) A body can experience a force in a given field only if it itself can generate it.
2) Energy can niether be created nor be destroyed.
3) The Gravity, which is nothing but the force of attraction between two masses is directly proportional to the product of the two masses.

So to create an artificial Gravity, what do we require:
1) Mass
2) For force to be of reasonable magnitude, the mass has to be really heavy.

So in all respects, this is a basic physicall fundamentall force between heavenly bodies & is resposible for the very existence of this universe & in all respects CAN NOT be created artificially because it would require a mass comparable to atleast to that's of Earth's.

Does that answere U'r query !

[xheavenlyx]

There are three fundamental forces in nature.

1. Gravitational : All bodies : Only attraction : magnifies with mass, reduces with distance.

2. Neuclear forces: Atomic : Repulsive + attractive : only atomic masses.
some relation with distance, i forgot.

3. Magnetic : Magnetic material/ferrites (something to do with electron spins : Repulsive + attractive : mass indipendent/ reduces with distance.

Hence, gravity exists, it cannot be created....but if u say "artificial attraction", then i dont think its possible with normal sized bodies, as someone has already pointed out above.

But anti-gravity theory exists and its just Repulsive (that too most probably works with magnetics, rather than gravity)

@anoop; biggie was talking about the gravitational, force existing in all bodies... in our 9th text book there is a formula wich clearely shows its ONLY dependent on mass and distance b/w ALL bodies.

[frodo.rok]

i think we have to wait for that to be happen untill they discover and create gravitons in laboratory.
because if there is anything like graviton then there should be anti gravitons also (because every particle has its anti paricle).
and anti gravitons can create a field which will opposes the gravitational field.

[silverscorpion]

Hi all,

I think artificial gravity can actually be created. Haven't you read about the plane that NASA has made in order to simulate zero gravity in sky? ie, the plane travels in parabolic movements at the same acceleration as that due to gravity and hence it's cancelled. So people inside experience zero gravity. If that is possible, then simulating the gravity experienced in poles at some other places must also be possible by the same argument.

I don't know if i'm correct. Do correct me if i'm wrong.

[ash]

You can simulate gravity in space of you spin a "torus" shape station around, right?

[shyamcn10]

This seems to be a pretty old thread but i guess this is one i should choose to be my first post(ever)!!! REgarding gravity, the basic assumption of calling all forces dealing with heavenly objects or otherwise gravity is wrong since the word itself is referred to the force of attraction b/w earth and any object within its gravitational field. all other forces may be referred to as gravitational forces. the thing with the plane that simulates zero gravity is nothing but the counteraction of free fall on "gravity".u may simulate the same experience in an elevator if u have the guts that is!!

Regarding simulation of gravitation b/w 2 object or for that matter even creating a zero gravity spot on earth, we have to goto the fundamental level of interaction b/w 2 bodies.gravitation like many other forces including strong,weak forces etc. is a particle transfer force that is particles are exchanged when a force leads to interaction b/w 2 objects.for gravitation it is merely called a graviton(whose anti particle is also predicted in the Standard Model).but the problem of actually observing a graviton is more complicated and efforts have been going on for the past few decades(in CERN and Fermilab) to actually observe one in transit or interaction.for this the nuances of the string theory must be explained and the ideas of multiple dimensions and membrane-like behaviour be clear.

here the inrteraction b/w heavy particles(certain bosons) is used for detection(actually the presence of the graviton is predicted by its absence!)

the gravitational force is fundamental and applicable to all masses in nature (even us! but our mass product is too low to counteract the small G value)but it so happens that sometimes gets over ridden by a dominant force.for eg: in case of particles less than 10^-8m the molecular forces take charge.

regardin repulsive forces b/w masses there can be as is the case with magnets of like polarity or charges.


Thus in conclusion if we want to produce gravitation it may be solely by being able to produce AND control a very large mass within a very small area(as in the case of neutron stars or black holes).
but if it is merely to create a force of attraction then we may resort ourselves to a standing on the edge (periphery)of a rotating body.
also note that there is no repulsion b/w planets but merely a balancing of forces ie. centripetal counteracts gravitational.

i could keep on writin but i guess this is enough!!!
no sources referred so please correct me if any of my points are wrong(even seemingly so).
thank u.

[The_Big_K]

@shyam:

Good post, buddy.

Thus in conclusion if we want to produce gravitation it may be solely by being able to produce AND control a very large mass within a very small area

Any crazy ideas on how to go about this?

[mahul]

i did not get one point. are taking about creating a system where we can get us 2 feel a sensation of some gravitational pull at a place where there is none(maybe outer space) or are we actually trying to create the same force(same nature) that is experienced between two bodies(due to gravitational pull b/w them)? if we just want to feel a sensation of gravity, (on a gravity free zone)then the solution wd be really simple. we just got to get inside an accelerating body and we would feel as though we are pulled by some force(like we feel we are pulled by the earth). but if we want the other option it's beyond the science we have today, i guess.