is gravity magnetic and can it be measured,? as in the further away from the earth the gravity reduces?

Question

if it can be measured we must know what it is?and how to alter it, ie anti gravity?

Answer 1

> is gravity magnetic...?

The only thing that gravity has in common with magnetism is that magnetism (sometimes) attracts things. But the two are very different otherwise. They are caused by fundamentally different things, and they generally act quite differently (for example, magnetism sometimes repels, while gravity never does). So I would give that a "No".

> can it be measured,? as in the further away from the earth the gravity reduces?

Absolutely. You can measure the amount of gravity close to the earth by observing the rate at which a rock falls or a pendulum swings. You can measure the amount of gravity far from the earth by observing the rate at which the moon circles the earth. And since 1957, you can measure the amount of gravity at in-between distances by observing the motion of satellites.

> ...if it can be measured we must know what it is?

That's not exactly how science works. We have a mathematical "model" of gravity that very successfully predicts its effects. But the question of "what" it is, is somewhat philosophical.

> ...and how to alter it, ie anti gravity?

According to the current model, the most effective way to cancel out the attractive force of gravity is introduce a secondary, repulsive force such as electrostatic repulsion. You can construct a device which is surrounded by a negative charge so that it pushes upward against the electrons that lay on the outer surface of our bodies, with a strength that exactly counteracts gravity.

In fact, we have such devices already. They are called "chairs."

If we ever discovered a means to directly block out a gravity field, I can't imagine that it would be economically feasible compared to the "old fashioned" anti-gravity devices that we already use every day.

Answer 2

Gravity and magnetism are two different forces. Gravity is a natural property of mass. Unlike magnetism, gravity attracts all other bodies with mass. Also, unlike magnetism, gravity can never repel, only attract.

Magnetism is caused by moving charges. A magnetic object can only attract or repel other magnets (or objects that have the potential to become magnetic). Even the world's most powerful magnet, therefore, would have no effect on a plastic comb; however, a massive object would have a gravitational attraction for that comb.

The strength of a gravitational field can be measured or calculated. To measure a gravitational field, you need only drop something in the field and measure its acceleration. As far as we know, you can't alter gravity without altering mass or bending spacetime. Both of those require tremendous amounts of energy, so for the time being I'd say those anti-grav boots are merely a product of science fiction.

Answer 3

The gravitational field of an merchandise has an infinite variety. the sphere capability is defined with the aid of this equation: g = G*M / R^2 the place g is the acceleration with the aid of gravity, G is the gravitational consistent, M is the mass of the object (Earth), and R is the area from the object. be conscious that the only time this equation is 0 is whilst M is 0 (there is not any merchandise), or whilst R = infinity (you're infinitely some distance remote from the object). So, you will possibly be thinking how weightlessness is achieveable. because it occurs, weight isn't a function of gravitational acceleration on my own. somewhat, weight follows this equation: W = m*(g - a) the place W is weight, m is mass, g is gravitational acceleration, and a is the vector sum of all accelerations with the aid of changing speed. once you're in freefall, g = a, so g - a = 0, so which you have not have been given any weight.

Answer 4

Gravity is not magnetic in the usual sense like a magnet.

Gravity is a completely different force from electromagnetism.

The force of gravity between two objects is given by:
F = G mM / r^2

where G is Newton's constant, m and M are masses of the objects, and r is the distance between them.

So you can see the force does go down like 1/r^2 as you move away.

There is no anti-gravity. EM forces can be attractive or repulsive. Gravity is only attractive.

There is a phenomenon called gravitational magnetic behavior but it has to do with massive objects moving quickly in general relativity (sort of like how regular magnetism is the result of the EM force with moving objects).