Is gravity as busy as gravity?

Gravity belongs to gravitational force.

The force of the object and the earth is reciprocal and subject to the gravitational pull of equal magnitude. It's just that the Earth is so huge relative to this object that such a small gravitational force can cause negligible displacement to the Earth.

The fall of the object you are talking about is actually the collision caused by the relative motion of the earth and the object, but you take the earth as a reference point and assume that the earth is stationary, so you think that the object crashes into the surface of the earth.

Since the Earth is rotating, all objects on the Earth's surface (not just the surface) are subjected to a centrifugal force, so part of the gravitational force cancels out the centrifugal force. This would explain why the same object with constant mass is weighed at the poles differently than the two weights weighed at the equator, because the circumferential velocity at the equator is large and the poles have almost no circumferential velocity, so the object at the equator is subjected to the greatest centrifugal force and the part of the gravity that is canceled out is also the largest.

Because motion is relative, if you think of the earth as stationary, it is true that the object is falling, but if you think of the object as stationary, it is not the earth "falling" to the object, it is the same thing.

Depending on the magnitude of the force, the force attracted to the earth plays a dominant role, so there is a tendency to fall.

The attraction of an object to the earth and the attraction of the earth to the object are not acting on the same object, and the condition of equilibrium is that the net force of all the forces acting on the same object is zero.

It's not the same. Gravitational force is also manifested in the centripetal force.

The gravitational force of man standing at the poles of the earth is equal to the key centripetal force, and the resultant force of the heavy empty force and the centripetal force is the gravitational force centripetal force m(2 faction t) 2r

When freely orbiting a star, the gravitational force is equal to the centripetal force. The full name of gravitation is "the law of universal gravitation", which is a law of interaction between objects, which was discovered by Newton in 1687. The magnitude of the gravitational force is directly proportional to the product of the masses of the two objects, and inversely proportional to the quadratic of their distances.

After the law of gravitation appeared, the study of the motion of celestial bodies was formally based on the theory of mechanics, thus creating celestial mechanics. To put it simply, the more massive the object is, the greater the gravitational force that produces the wide grind, and this force is directly proportional to the mass of both objects, and inversely proportional to the distance between the two objects. The gravitational pull created by the mass of the Earth is enough to hold everything on the Earth.

Gravitational attraction is the attraction between substances with mass and is real.

Centripetal force is not a specific force, it is just a concept, its function is to change the linear motion of the object and form a circular motion (or curvilinear motion), and the centripetal force is not a specific grip force, and there is no such thing as centripetal force in nature. The centripetal effect (so to say emphasizing that the centripetal force is not a specific force) requires a specific force to provide, for example, in celestial motion, the centripetal effect of a circular motion is provided by gravity.

I don't know if I made it clear.

Gravitation refers to the law of interacting between objects, and the full name of gravitation is the law of gravitation, which was discovered and proposed by physicist Newton.

In 1687, Newton published the law of universal gravitation in his Principles of Mathematics of Natural Philosophy, which states that gravitation is proportional to the product of the mass of the interacting object.

The law of gravitation was inferred by Newton on Galileo's initial idea of centrifugal force and centripetal force and Briard's idea of the square ratio of gravitational force.

So Newton said that he was able to succeed because he stood on the shoulders of giants, and the discovery of the law of gravitation was one of the greatest achievements of natural science in the 17th century.

Newton said, "The law of gravitation is the law of gravity that explains the interaction between objects." ”

The magnitude of the gravitational force between two objects is directly proportional to the product of the masses of the two objects and inversely proportional to the square of the distance between the two objects, and has nothing to do with the chemical nature or physical state of the two objects and the intermediary matter.

The formula is: f = ( g * m1 * m2 ) r 2f: the gravitational force between two objects.

g: gravitational constant.

m1: The mass of object 1.

m2: The mass of object 2.

r: The distance between two objects.

Einstein's theory of general relativity says that gravitation is the manifestation of the motion of an object in curved space.

i.e. Newton was wrong. The attraction of objects to each other is not due to gravitational attraction, but also due to the deformation of space by the mass of one object, which causes another object to move towards it; It's as if a well has been formed in the ground. If this object is moving at high speed, it is moving around it.

It's like a motorcycle moving around the wall of a well without falling.

What does gravity say?

The attraction of any object to each other is collectively called gravitational attraction, and the attraction of objects on the earth by the earth is called gravity, so gravity is a specific kind of gravitational force!

Due to the rotation of the Earth, an object on the Earth (a part of the Earth) rotates around the Earth's axis, and its centripetal force is provided by gravitation (gravity), and the "extra" part is called the gravitational force of the object, and at the north and south poles of the Earth, there is no difference between gravity and gravity because the centripetal force is zero.