what is the secret of the earth rotates around its axis and around the sun. see more in details?

Question

if the effect of gravity of sun is on earth, why donot the earth falls on to the sun. think over?

Answer 1

It is because of inertia. In space if you throw a tennis ball it keeps going on forever unless it hits something that might harm it. But the pieces of it will float where they were. So the gravity doesn't actually affect much. Unlike in the eartj's atmosphere, there is no gravity to pull an object down and stop it. Space is cool!

Answer 2

It is, but slowly and surely.

This is because, centripetal force is only slightly more than the centrifugal force.

Centripetal Force:
This is the net effect of gravity(it is the pull towards the Sun).= P.

Centrifugal force:
Moving of Earth mainly along the elliptical orbit around the Sun( it is the pull away from the Sun) = F

P > F By slight amount.

So how much have we moved in ten million years?:

In to-days time frame it would have taken 20 months to do the journey around the sun on a much Bigger elliptical orbit.

In other words.

In to-day's time frame we would have taken 20 months to go around the sun instead of 12 months.

Other facts:

We are also slowing down.

Earth use to take only 20 hours to complete a revolution in to-day's time, we take 24 hours to do the same thing. The days got longer by 4 hours over 10 million years.

Answer 3

Inertia keeps us moving out, but the sun's gravity pulls us in. It is a delicate balance. Without inertia, we wouldn't have day and night, because we wouldn't rotate. One side of the Earth would be in constant day, and the heat would probably kill everything, and one side would be in constant night, and nothing would survive in the cold. We also wouldn't have seasons, because we wouldn't revolve around the sun. The moon would stay in one place in the sky, because inertia wouldn't push it into motion. The only reason it would move is if Earth's gravity pulled it toward us. It would eventually crash into us. However, since the Sun's gravity is much stronger, we might be incinerated before the moon could crash into us if we are pulled toward the sun instead. Or we might crah into Mercury or Venus on our way toward the sun. They would incinerated too. All the planets would be. There are many possible outcomes, but we need inertia.

Answer 4

The Earth rotates on its axis as a result of conservation of angular momentum.
The reason it doesn't fall into the sun is because it has enough velocity to keep it from completely falling into the sun, but not too much to escape the sun's gravitational pull.

If you think about it, everything in the universe obeys conservation of angular momentum. Galaxies rotate, solar systems rotate, stars rotate, planets and satellites rotate.......

It is not inertia, however, because there are forces acting on the Earth.
Inertia applies to objects being at rest, or moving in a straight path without any forces acting on it. Inertia is an object's ability to resist change to velocity if no external forces are acting on it.

Answer 5

Same why the moon doesn't crash to the earth.
the Earth's orbit speed is flinging Earth out in to space the Sun is pulling the earth in. They are at an equilibrium one pull away one drawing in so the Earth is captured into an orbit around the Sun.

Answer 6

It does not fall in bcoz, the earth is travelling with a velocity perpendicular to the sun's gravity pull and thus they cancel each other out.

Answer 7

the earth also has gravity which effects the sun to come towards it.therefore the earth is not gets near the sun n y the hell u want the earth to go near the sun u want to die or what.

Answer 8

well i don't agree or not understood the above answers.they say it is because of inertia that earth rotates around the sun.in my veiws it is because of earth's gravity that we do not fall on the sun .sun has gravity and attract us toward itself . earth also attract sun towards it but force of gravity of sun is more stronger and that's the reason why sun do not revolve arond the earth. i hope you got your answer.

Answer 9

the earth has too much kinetic energy to be captured