How to understand inertial force in relation to inertial force

1.The force that tears the asteroid apart is not an inertial force, this force is called the tidal force, in fact, it is the gravitational difference, because the gravitational force varies with the distance, so for the larger asteroids, the forces on each part are different, if there is no internal force, they cannot move with the same acceleration, so due to the uneven gravitational force, there will be interactions inside the asteroid, and it will be torn apart to a certain extent. This problem can be considered in a frame of reference, which requires the use of inertial forces, but this tearing effect is not related to the inertial forces.

2.The inertial force is an imaginary force in the framework of classical mechanics, which was proposed in order to use Newton's laws of motion in non-inertial frames, that is, there seems to be such a force in non-inertial frames.

But in the framework of general relativity, the inertial force and the gravitational force are already one force, just like the relationship between the magnetic field force and the electric field force, so in the theory of relativity, the inertial force is a force that actually exists.

3.As for the comet tail, there are two kinds of comet tails on the same comet at the same time, the dust comet tail and the ion comet tail, the formation of the two comet tails is different, and the direction is also different. For example, Encyclopedia, or Wikipedia.

The force of inertia is imaginary and generally refers to the force f=ma that makes an object rest

When an asteroid approaches and then leaves, the inertial force is directed away from Jupiter, and the gravitational force is directed towards Jupiter

Inertial force is an assumption introduced in order to make Newton's first and second laws hold in non-inertial frames.

The two cases that you are talking about are indeed caused by inertial forces, which can be explained from a conventional point of view in terms of centrifugal motion

However, the question of whether the inertial forces actually act is not conclusive (Einstein, when he established the general theory of relativity, did not say that the acceleration of motion is the acceleration of gravity...).

This involves the question of the nature of the movement of matter.

According to the latest ideas, any microscopic elementary particle is interacting with a vacuum all the time, and this action may be the basis for space-time and motion.

The resulting knowledge may lead to an essential understanding of inertia and its forces ...

The answer will be given in the future.

Inertial force refers to the tendency of an object to maintain its original motion when it accelerates. The inertial force does not actually exist, only the force that originally accelerates the object, so the inertial force is also called the imaginary force.

Inertial force refers to: when the object has acceleration, the inertia of the object will make the object have a tendency to maintain the original state of motion, and at this time, if the object is taken as a reference frame and a coordinate system is established on the reference frame, it seems as if there is a force acting in the opposite direction on the object to cause the object to be displaced in the coordinate system, so it is called inertial force.

Because the inertial force does not actually exist, only the force that originally accelerates the object, the inertial force is also called the imaginary force. Its concept was developed because Newton's laws of motion do not apply in non-inertial frames. Interaction forces can be observed in both inertial and non-inertial frames, but only in non-inertial frames.

1. The inertial force is also known as the illusion force. Inertial force refers to the tendency of inertia to keep the object in its original state of motion when it accelerates, and if the object is used as a reference, it appears as if there is a force acting in the opposite direction on the object, so it becomes an inertial force.

2. The property of an object that remains at rest or in a state of uniform linear motion is called inertia. Inertia is an intrinsic property of an object, which is manifested as a degree of resistance of an object to a change in its state of motion, and mass is a measure of the magnitude of an object's inertia. When the external force acting on the object is zero, the inertia is manifested as the object keeping its state of motion unchanged, that is, keeping it at rest or moving in a straight line at a uniform speed; When the external force acting on the object is not zero, inertia is expressed as the degree of difficulty with which the external force changes the state of motion of the object.

3. All objects will remain at rest or in a uniform linear motion until a force applied to them changes its state of motion. Or an object that is not subject to any external (or a net force of 0) will remain at rest or move in a straight line at a uniform speed.