What forces sustain the rotation and revolution of the nine planets?

Revolution. Because the sun attracts.

Rotation. We know. Almost all celestial bodies in the solar system, including asteroids, rotate.

And it rotates according to the law of the right-hand rule. The revolution of all or most celestial bodies is also a right-hand rule. Why?

The predecessor of the solar system was a dense cloud. Driven by some kind of force. Make it attract one another.

This accretion process. The density gradually increases. This accelerates the accretion process.

The particles in the primordial solar nebula were initially in a mixed state. Rampage. Gradually turn disorder into order.

On the one hand. Centripetal accretion becomes the sun. Other than that.

As a result, the gas gradually developed into a flat shape. in the process of development. Potential energy becomes kinetic energy.

Eventually, the whole thing turned around. Start turning. There is such a turn.

There's a turn. After gaining the upper hand in one direction. all became one direction.

This direction is now known as the right-hand rule. There may be other solar systems that are left-handed rule. But in our solar system is the right-hand rule.

The energy of the Earth's rotation** is caused by the potential energy of matter and finally turning into kinetic energy. In the end, it is the rotation of the earth on one side. On the one hand, rotation.

This is like a person throwing a chain ball, when the person is turning, the hand will pull the end of the line and form a mutually balanced force with the lead ball, this force is like the force of the sun (and the planets of the solar system have changed from the original nine to eight in 2006), pulling each other. Since these forces are balanced with each other, there is no question of who attracts whom.

Do you know the law of gravitation? Newtonian.

Coplanarity means that the direction of the planet's orbit around the Sun is in the same direction, coplanarity means that the orbital plane of the planet around the Sun is in the same plane, and near-circularity means that the orbital shape of the planet around the Sun is close to circular.

The number of nuclear charges on a certain side of this gravitational plane that the planet is attracted to by the Sun is due to the nuclear charges contained in the elements that make up the matter.

More and more gravitational attraction because the gravitational pull on this side of the planet is larger, and under the action of the gravitational pull of the sun, in order to make the gravitational force generated by this side come into direct contact with the gravitational force of the sun, rather than the side attraction.

Rotation occurs under the gravitational pull of the sun (i.e., the rotation of the planets), and the planets are rotating with inertial force.

Because of the different gravitational forces of the planets in different positions, they rotate and rotate around the sun under the action of mutual attraction with the sun.

Mars orbital period: days, rotation period: days.

Mercury orbital period: days, rotation period: days.

Venus orbital period: days, rotation period: days.

Jupiter's orbital period: days, rotation period: days.

Saturn's orbital period: days, rotation period: days.

Uranus orbital period: 30685 days, rotation period: days.

Earth's orbital period: 369Day 6:09:10 day, rotation period day.

Neptune's orbital period: days, rotation period: about 18 hours.

The planets of the solar system, in descending order of distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Most of the eight planets also rotate in the same direction as their orbit. There are only two exceptions: Venus and Uranus.

Venus rotates in the opposite direction to its revolution. Whereas Uranus rolls in orbit. Pluto, once considered one of the "Nine Planets", was defined as a "dwarf planet" on August 24, 2006.

Mercury. One revolution is 68 days on Earth; Venus orbits 225 days on Earth; One year on Mars is about two years on Earth; 1 year on Jupiter is about 12 years on Earth;

1 year on Saturn equals about 29 years on Earth, and 1 year on Uranus equals about 84 years on Earth; Neptune.

The last 1 year is about 165 years on Earth; Pluto, the farthest from the Sun.

It takes years on Earth to go around the sun once.

The orbit of the planet around the star is called revolution, and the earth's revolution is 1 year, and the distance from the sun determines the length of the orbit around the sun.

Yes. Solar system.

The stars in have a rotation, and all the planets revolve and rotate.

There is only one star in the solar system, and that is the Sun. In contrast to the earth, the sun's rotation cycle is the solar osmosis, which is called the conjunction period of the sun's rotation. At the same time, the Sun also carries all the celestial bodies in the solar system around the center of the Milky Way.

Revolution, the revolution period is about 22.5 billion years.

The planets in the solar system also revolve around the sun, and the closer they are to the sun, the shorter the orbital period; The farther away from the Sun, the longer the orbital period. As the planets rotate, they also rotate. The rotation period of individual planets varies. Such as Mercury.

The revolution period is 88 days, and the rotation period is days. Venus's orbital period is 225 days and its rotation period is 243 days. Needless to say, the earth. The orbital period of Mars is 687 days, and the rotation period is days.

Other planets also have fixed periods of revolution and rotation.

Summary. Angular kinetic energy theorem: D(RF1SCOS)-CD(RF22T) =D(Re) where the physical meaning is:

The increase in the angular kinetic energy of an object d(re) is equal to the difference between the mechanical work d (rf1scos) and the dissipated power cd (rf22t) made by the applied force and the reaction force. f1 is the resultant force of a force or several forces, the direction and the direction of the object are not in a straight line, and f2 is the reaction force of f1, which is the angle between the direction of rotation of the object and the direction of the resultant force of the object. Discuss:

When =00 or 1800, the rotation is excessive to translational, and the angular kinetic energy theorem is excessive to the kinetic energy theorem. When =900, rotation is circular motion, and f1 does no mechanical work.

The physical meaning of the angular kinetic energy theorem is: d(rf1scos)-cd(rf22t) = d(re) The physical meaning of which is: the increase in the angular kinetic energy of an object d(re), is equal to the difference between the mechanical moment d (rf1scos) and the dissipative moment cd(rf22t) made by the first grip force and the reaction force.

f1 is the resultant force of a force or several forces, the direction and the direction of the object are not in a straight line, and f2 is the reaction force of f1, which is the angle between the direction of rotation of the object and the direction of the resultant force of the object. Discussion: When =00 or 1800, the rotation is over to translation, and the angular kinetic energy theorem is over to the kinetic energy theorem.

When =900, rotation is circular motion, and f1 does no mechanical work. When 00

Jupiter's rotation takes only 9 hours, 50 minutes and 30 seconds!

But it is necessary to know that Jupiter makes a gas planet that exists"Poor autobiography"phenomenon. The polar rotation will be slightly slower. (The same phenomenon exists in the sun).

The autobiographical velocity data for the other planets is:

Saturn 10 hours 39 minutes.

Neptune 16 hours.

Uranus 17 hours 14 minutes.

Earth 23 hours 56 minutes.

Mars Earth days.

Mercury day. Venus Days.

The sun is about 25 days in the equatorial region and about 35 days in the extremely low region.

The shortest orbital period must be Mercury, and the gravitational force of the Great Sun f=g (gravitational constant) m (solar mass) m (planetary mass) r distance of the star).

Centripetal force f=mv r=4m (revolution period).

The square of the revolution period t of the Synapid allows Hu to be square to the 3rd power of the distance r into a positive Hui mu ratio.

Therefore, Mercury's orbital circumference is the shortest.

1. Mercury day (58 days and hours).

2, Venus day (reverse rotation).

3, Earth days ( hours 86,164 seconds) 4, Mars days (hours).

5, Jupiter day (9 hours 55 minutes seconds).

6, Saturn day (10 hours, 39 minutes, seconds).

7, Uranus day (17 h 14 min sec, reverse rotation) 8, Neptune day (16 h 6 min 00 sec) <>