Centrifugal force and centripetal force are both important concepts in classical mechanics. Centrifugal force means that when an object moves in a circle, centripetal acceleration will produce a force-like effect in the coordinate system of the object, which is similar to the force acting in the centrifugal direction. It is an imaginary inertial force, which does not exist in reality. Centripetal force is a strength, which points to the center of the circle when an object moves along a circle or curve.

Space-time is distorted by gravity, so that matter has tension due to inertia, and tension is an extension of centrifugal force.

Internal rotation of field micro-gas energy matter,

Satellite constants of intramolecular meteorites.

High pressure or thermomagnetic throwing,

External centrifugal force is opposite, easy to vacuum.

Centrifugal force and centripetal force are both important concepts in classical mechanics.

Centrifugal force means that when an object moves in a circle, centripetal acceleration will produce a force-like effect in the coordinate system of the object, which is similar to the force acting in the centrifugal direction. It is an imaginary inertial force, which does not exist in reality.

Centripetal force is a strength, which points to the center of the circle when an object moves along a circle or curve.

Centripetal force and centrifuge are not a kind of physical labor. Centripetal force and centrifugal force are two terms that physics students often confuse or misunderstand.

A typical misunderstanding is that the centripetal force points to the center of the circular trajectory of an object, while the centrifugal force is outward, as if they act in opposite directions. However, only one of them is a real power figure!

Centripetal force and centrifugal force

The only force that causes the circular motion of an object is centripetal force, which always points to the center of the circular path. For example, the centripetal force of a car turning at a corner to make it move along a curve instead of a straight line is guided along the radius of the circle drawn by the car.

On the other hand, centrifugal force does not exist. Just like the "back to the future" magnetic flux capacitor, this term was invented to help describe fictional things, although it is based on some real observations. The effect of circular motion often makes objects feel as if they are flying outward, and the idea that an inward force leads to this experience seems puzzling at first.

Centrifugal force is a feeling.

When the car turns sharply, passengers may feel that they have been "left" to the right of the car. Passengers on a roller coaster may feel pushed into their seats.

These feelings are the result of inertia; However, it is not a force (although it can be called an obvious force). Inertia describes the tendency of an object to resist motion changes, as described by Newton's first law of inertia.

When the car suddenly turns, or the roller coaster gallops, the human body inside is already moving in a certain direction at a certain speed. According to the law of inertia, these objects initially resist the change of speed.

When the car suddenly started to drive to the left, the passengers were still moving forward in space-therefore, the car was not "thrown to the right", but hit the passengers from the left when the car suddenly moved. Once their bodies catch up and start to move to the left, the shock is over.

Similarly, in a roller coaster, when the roller coaster starts to push the body upwards, the body is still moving downwards. It was not until their bodies caught up with the new speed of the roller coaster that they felt as if they had been thrown out of the cart. Their bodies are still moving towards the tram, and the tram is now moving towards their bodies.

How does centripetal force work?

The centripetal force is only part of the motion of an object in a circle. Another factor is linear velocity. When the centripetal force is at right angles to the direction of motion of an object, the object must be in motion, so that it can move around a circle.

Consider a ball at the end of the rope. For a person, to make it rotate around his head, he must first use the horizontal part (in other words, not directly enter or leave himself). The man tightened the rope and the ball began to spin around it instead of flying out.

In order to keep the ball on the rope spinning, two things must happen constantly: one is to constantly tighten the rope (by pulling the rope), and the other is to constantly increase the tiny horizontal thrust to keep the ball moving in a straight line, otherwise it will slow down due to friction with air. But in space, because the ball will not lose any linear velocity when it rotates in a vacuum, in space, people only need to pull the taught rope. )

If the ball doesn't move, people tighten the rope and the ball will move inward instead of in a circle. If the ball moves directly from the person and they pull the rope, the ball will slow down first, then change direction and return to the person, which is also not round.

In this case, it is meaningless to call the force transmitted through the rope centripetal force. Just pulling the ball.

The source of centripetal force

The word centripetal force is only used to describe any force perpendicular to the linear velocity of an object. The interaction between many objects can provide centripetal force.

For example, as mentioned above, a rope rotating in a circle provides centripetal force to the object tied to the end of the rope. When the car turns, the friction between the tire and the road surface produces centripetal force. Because gravity provides centripetal force to the center of the earth, the satellite continues to move around in orbit.

In each case, if the source of centripetal force suddenly disappears, rope, friction or gravity, the object will stop moving in a circle. More specifically, it will fly in the direction tangent to the circle at any linear speed.

Centripetal force and centripetal acceleration

Because the centripetal force points to the center of the circumference of the object

It turns out that the classical theoretical model can't explain centrifugal force at all! But centrifugal force is an inevitable objective existence in real life.

Therefore, only redefining centrifugal force and integrating it into the theoretical system is an inevitable and feasible way.

Why must centrifugal force exist, must exist?

The objective existence of natural forces does not depend on people's will. What we can do is how to prove its existence. Just as Newton put forward the existence of gravity, it is impossible for people to accept the existence of a force that does not need contact, but now people are used to accepting the existence of gravity, so we know that the distance effect of gravity does exist.

Centrifugal force is a natural force concealed by Newton centripetal acceleration's theory. However, people can never use Newton's theory to explain some natural phenomena, such as the reasons for the formation of planetary rings, such as the reasons for the stability of planets in orbit (so that when launching satellites to calculate orbit and satellite speed, it is necessary to assume that there is a virtual force to calculate the related quantity), and even for gravity, it has not yet figured out what factors make it up!

Therefore, centrifugal force must actually exist in the theoretical system!

But the current situation is that it does not exist in the theoretical system and cannot exist.

The reason is that it is incompatible with the classical theoretical system, that is, the classical theory describes the phenomenon of rotating motion with accelerated motion, so the centrifugal force is covered up.

Therefore, in order to save the position of centrifugal force, we can only establish a new mechanical theory system for it. Here we are not denying the value of classical mechanics, but developing new theories to solve existing problems.

The starting point of the new theory is the law of inertia. Because the law of inertia is the core of the problem. Because the inertia law of classical theory describes inertial motion as the mode of linear motion of an object, the whole classical mechanical system is based on the study of linear motion of an object. Many questions, even almost all questions, have found answers from classical mechanics.

The world mainly exists in the form of circular motion, so it is conceivable that there must be many problems that have not been solved perfectly, and I don't know the true face of Lushan Mountain, and I only live on this mountain. Everyone didn't jump out to see it, and of course we couldn't find anything strange!

Therefore, we need to establish a kinematic and mechanical reference system suitable for circular motion, that is, the circular motion reference system. Because our classical mechanics uses Galileo inertial frame of reference, that is, the linear motion frame of reference, everyone thinks that there is only one frame of reference in the world.

However, the establishment of inertial frame of reference should have a basis! Galileo's inertial system is based on the law of inertia. If the object under study is in inertial motion, how to establish an inertial system? How can it be called an inertial system?

Therefore, inertial system is also a key factor in establishing mechanical model.

None of this can be changed, but the understanding of inertial motion can be changed!

In other words, some inertial motions can be different from those described in classical theory, that is, they cannot be linear motions. Many people here may think this is not a joke! How can inertial motion not be linear motion?

Then let's start with the actual experimental basis.

You know, the appearance of Newton's first law is closely related to Galileo's experiment, that is, the inertia experiment of rolling a ball on the table.

The present experiment is the same experiment, but the interpretation is different.

In other words, Galileo's experiment of rolling the ball on the table is not the only one that can draw the conclusion that the ball will definitely move in a straight line. Newton's first law can be obtained by removing the gravity factor, which is an ideal theoretical model and proved to be very successful in practice.

However, Newton's inertial model is the result of abstract processing. What if it's not so abstract? The experimental result will be like this: it will rotate around the earth on the same horizontal plane, that is, it will do circular motion.

Based on this inertial motion model, it is entirely possible for us to establish a circular inertial motion reference system!

Circular motion is inertial motion, which is exactly how celestial bodies move in our universe!

In order to distinguish the classical concept of inertial motion, here we call it inertial motion under the action of balancing force.

Since the circular inertial system can be established, centrifugal force can settle down in it! It will work with gravity to make this home more perfect.

Therefore, centripetal force and centrifugal force will be in their respective positions, which can be literally divided into force tending to the center of the circle and force deviating from the center of the circle, rather than saying that centrifugal force is a component of centripetal force.

In celestial motion, gravity plays the role of centripetal force, and centrifugal force is inertial centrifugal force. These two forces have played their respective important roles in the evolution of the universe and are indispensable. Together they created this perfect world. What we call gravity is also determined by them, so the greater the rotation, the greater the influence on gravity. The lower the latitude, the greater the radius of rotation, and the greater the influence of gravity, because gravity is the resultant force formed by gravity and centrifugal force.

Please refer to the inertia principle of everything in the universe for details.

What's the difference between centripetal force and centrifugal force? Centrifugal force is the starting point and centripetal force is the end point.

There is no centrifugal force, only centrifugal force.

Centrifugal force and centripetal force are like tying an object to the other end of a rope, and then holding the rope in your hand, so that the object can fly without falling. An object will have a force to escape, which is called centrifugal force. If the object flies away as soon as it is released, then the centripetal force is the force to hold the rope with your hand and stop the object from flying away. So the two forces balance the object and rotate at a constant speed. If you spin hard, as long as you don't let go, the object won't fly away, but it will accelerate the circular motion and offset the centripetal force of the pulling force with speed. Centrifugal force and centripetal force mean that one wants to go and the other wants to pull in, as simple as that.