I am an amatuer to understand Newton's theory of relativity! can anyone explain me what is gravity?

Question

The Gravitational pull that keeps everyone on their chairs differs for each planet and practically nill in outer space...

Answer 1

Newton's theory of relativity was nothing to do with Gravity, it was to do with the motion of objects and how they appeared to each other. But it was superseded by Einstein's theory of relativity which gives different results when the speed gets close to the speed of light.

Newton's theory of gravity says that it is a force of attraction between all matter. Different planets have different forces of gravity because they have different amounts of matter in them.

Einstein's theory of gravity says that it is not a force but a distortion of spacetime.

Answer 2

Isaac Newton discovered that gravity is a force, like magnetism. It is generated by the mass of any material object and is affected by the distance between objects. The more massive an object is, the more gravity it will have. The closer two masses are to each other, the stronger the effect the gravity will have.

This worked well for a few centuries to explain how planetary orbits work. A planet is pulled toward the Sun with a force proportionate to its mass, but it is moving past the Sun at the exact speed that will keep it from moving closer. It is literally "falling" around the Sun, missing it constantly by the same amount.

But light was affected by strong gravity too, and light has no mass. A better explanation was needed. Einstein came up with the idea that matter distorts space, much like a heavy weight will sink into a mattress or a trampoline, only 3-dimensionally, so we can't see the distortion. Objects that come into the gravity "well" of a planet will tend to move toward it. As they get closer, the distortion is stronger ("steeper") and they move faster. Distorted space explains why light will sometimes bend around a strong gravity source.

So, different planets have different masses, therefore their gravities are stronger or weaker, and their gravity wells are deeper or shallower. The gravity of a less massive planet will be weaker and less extensive than that of a more massive planet. And the farther one is from the planet, the less influence it will have. Even you and I have gravity, but it is so weak that it can't be observed on Earth, and in space, it would take years to attract anything.

Answer 3

Your Question is not correct ! What probably u have in mind is Newton's Law of Gravitation not Einstein's Theory of Relativity. Gravity is nothing but the pull exerted by the Earth when an object is moving away from its Centre. U know how Newton dicovered this ! Well he was relaxing under an apple tree when he suddenly found an apple fall from the tree and landing on the ground. Gravity enables you to maintain your balance. In other planets or for that matter moon where the Gravity pull is 1/6 th of that of the Earth you tend to lose your balance and tend to float as the pull of Gravity is not sufficient to maintain the same.

Answer 4

Well let me tell you that gravity is the power of the earth which the earth has in it to attract all the things whether living or non-living.It is the attraction power why we fall when we get unbalanced. This pull by the earth is called as gravity and it differs in all the planets because factors as its speed of rotation and revolution,density,atmosphere etc.
This attraction depends on all this factors due to which the gravitational pull of other planets are different from each other.

Answer 5

There is no relation between relativity and earth's gravity.
But earth gravity is bcz earth core has elements Fe, Ni in liquid form which exhibits the ferromagnetic that's why earth has gravitational forces.

Because of these magnetic properties of earth we spared from the space radiations,

Answer 6

this is brought about by potential of a ailment that i elect to call FLS, incorrect good judgment Syndrome. It runs rampant between AGW alarmist. First you try to persuade those that CO2 causes warming. You practice charts the position CO2 and temperature upward thrust and falls in synchronized team spirit. Make the undeniable fact that the correlation signifies that CO2 causes international warming and need no individual notices that this is 800 years previously temperature begins effecting CO2 ranges. even as they do you clarify away the contradiction by potential of basically making a fact, acknowledging there's a lag, following up with a "CO2 for sure prolonged the warming and amplified the warming." You bolster your argument claiming "small forcing of the solar" began the melting of ice yet once CO2 began turning out to be a runaway warming/CO2 comments starts. You conviently forget concerning the actual shown reality that in the cooling cycles, CO2s effectual warming comments loop is unable to maintain the temperature up and it magically begins dropping followed many years later by potential of a drop in CO2. do not see the coolest judgment interior the end that CO2 causes international warming? in an attempt to persuade, an FLS affected individual will crew all clinical theories mutually "wondering" you'll one way or the different forget concerning the failings in AGW idea and settle for, you may want to settle for because you've faith in different clinical theories made by potential of scientist you may want to count number on all scientist no matter if their theories are testable or have a predictable result.

Answer 7

Perhaps your trouble is that it isn't Newton's theory, It's Einstein's. At any rate, the greater the Mass in a given area of space, the greater the gravity.

Answer 8

The earth is constantly spinning. If you have a ball that is spinning what ever is on it will stay on, but what ever you try to put on it while it's spinning will get bounced off. It's the same with the earth. If the earth stopped spinning, we'd all fall off. Try it with a round object.

Answer 9

an attraction force between earth &outer space.

Answer 10

Gravity is a combination of mass and accelleration.