What is the force that makes the planets rotate and revole around the sun?

Answer 1

simple gravity....ask mr.newton he has a bunch of laws about this.

http://en.wikipedia.org/wiki/Isaac_Newton

cc

Answer 2

True, as many have said, gravity is what makes the Earth rotate around the Sun.
True, as One said, it is conservation of momentum that keeps the Earth rotating on itself.
But what made the Earth rotating around the Sun in the first place (and why not around Saturn, for example, since Saturn also has its own gravitational forces)?
You have to go back in time, when the solar system was just a cloud of dust, gas, particles, when there were "nothing" solid.
Nothing was spinning around anything.
Gravity was everywhere, attracting all bits to each other.
A few started collapsing on each other, forming lumps of matter. These collapses created some rotation.
More collapses occurred around a "center" of a large mass, creating the Sun. The other masses conserved their momentum, and rotation, to become planets.
So, the body at the center became the Sun, the others the planets, but they all kept their momentum and their rotations.
So, it is the Conservation of momentum (Inertia) and rotation that make things moving (in apparent straight line and along their own axis), and it is the Gravitational forces that keep them rotating around the sun.
Suddenly remove the Sun, and all planets will go in straight lines into space (through Inertia or conservation of momentum). The heavier one (probably Jupiter) will exert more "pull" on the other planets and, after a while, planets will start rotating around Jupiter, at that time, by the force of gravitation of Jupiter.
I would not like to have to recalculate the new "Jupiter System"...

Answer 3

There are actually two different questions here.

The planets revolve around the sun because of gravity, as many others have said.

A planet's rotation on its own axis, though, has little to do with gravity and nearly everything to do with conservation of angular momentum in an effectively-frictionless medium. Somewhere along the way, something started the Earth spinning -- probably asteroid strikes over millions of years during the planet's early formative days. The net energy and net vector of all the various strikes resulted in the rotation we see today.

In keeping with Newton's First Law of motion, an object in motion will remain in motion unless acted upon by an external force. The forces acting to slow the Earth's rotation are negligible -- so the Earth just a'keeps turning.

Answer 4

Gravitational force between the sun and the planet makes the planet rotate around the sun, as for the revolving on the axis is concerned it is due to the initial angular velocity at the time of creation of the planet, and since there is no force on the planet to stop it, it just continues to revolve on its axis.
Now don't ask why all planets go around the sun in the same direction or why all of them are nearly in the same plane

Answer 5

My dear friend there are many forces acting on a planet. But basically two forces are main. One is the gravitation force of sun and second is gravitation force and angular momentum of that particular planet which bound that planet to rotate and revolve around the sun.

Answer 6

It's because of the law of Gravitation...According to that every body of mass attracts every other body of mass with a force which is given by the following definition...
It states that
Every single point mass attracts every other point mass by a force heading along the line combining the two. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses:

F = G(m1*m2)/(r^2)

where:

F is the magnitude of the (repulsive) gravitational force between the two point masses
G is the gravitational constant
m1 is the mass of the first point mass
m2 is the mass of the second point mass
r is the distance between the two point masses

Assuming SI units, F is measured in newtons (N), m1 and m2 in kilograms (kg), r in metres (m), and the constant G is approximately equal to 6.67 × 10−11 N m2 kg−2.

Answer 7

Gravity. Or, if you like Einstein's explanation, space curves in response to mass and planets follow the line of least resistance in the graviational well. The curvature of space that the sun creates is traced by the planets in a circular fashion.

Answer 8

The gravitational pull of the sun and the planets keep the planets in their orbit around the sun.

Answer 9

It is the same force that helps the electrons to revolve around the nucleus or Proton. So far no name is given to this force - unending, uninterrupted and unchangeable. Though Physics has tried many times to find out a machine that works without energy, and without stopping, no satisfactory success so far, compared to Atom Structure and Solar Structure. To my knowledge, there was one in Konark Temple long ago, I wish you best of luck to make research in this line.

Answer 10

classically gravitational force but acording to the theopry of relativity it is the space time distortion due to bodt with a larger mass that makes all other lighter bodies to revolve around it under a certain force of attraction.

Answer 11

gravitation makes the planet rotate