Law 70 that holds in non inertial frames

My idea is this, since the classical system of mechanics is based on Newton's three laws, (although it was originally theoretically derived from the law of conservation of momentum) Newton's laws are true for all physical phenomena in the category of classical mechanics. In non-inertial frames, because some phenomena are contrary to Newton's laws, inertial forces (inertial centrifugal force, Coriolis force, etc.) are introduced, so that Newton's laws are still valid in non-inertial frames, so as to extend Newton's laws to the entire physical world. In other words, the laws of classical mechanics are true in all non-inertial frames.

For example, if a small ball moves in a uniform circular motion with the disk, observed in an inertial frame, the ball is subjected to a centripetal force (the specific nature of the force is not considered for the time being), observed on the disk (non-inertial frame), the ball is stationary, and the ball is only subjected to a centripetal force, according to Newton's law, it is impossible for him to be stationary. Therefore, the inertial force is introduced, and the magnitude is equal to the mass of the ball multiplied by the centripetal acceleration, and the direction is opposite to the centripetal force, so that the force of the ball is balanced and remains stationary in the non-inertial frame.

In my humble opinion, I hope you will correct the inappropriateness.

General relativity. To be honest, I haven't seen this thing, and I'm still not knowledgeable, so I've only heard some introductions. Isn't the purpose of this to remove the problem that special relativity is going to do in inertial frames?

The law of conservation of momentum.

The law of conservation of energy.

All the laws of kinematics in the first year of high school.

The law of inertia is also called Newton's first law.

Inertia is an intrinsic property of all objects, whether solid, liquid, or gas, whether the object is in motion or at rest. Since the property of an object to maintain an unchanged state of motion is called inertia, Newton's first law is also called the law of inertia.

Newton's first law tells us that "motion does not require force to sustain it". If the resultant force on an object is 0, then what velocity it had before would still be what velocity it had after that.

Two expressions of Newton's first law:

1. When any object is not subject to any external force, (fnet=0) always maintains a uniform linear motion or a stationary state until an external force acting on it forces it to change this state.

2. When a particle is far enough away from other particles, the particle moves in a uniform straight line or remains stationary.

The first expression is more common, and the second expression is mentioned in the writings of Albert Einstein and Wu Dayou. The two expressions are equivalent.

The law of inertia, also known as Newton's first law, is one of the fundamental principles in classical mechanics.

1. Inertia theorem:

If there is no external force acting on an object or the net force of the external force is zero, then the object will remain at rest or in a state of uniform linear motion.

This law emphasizes the property that an object will remain in its state of motion without external interference. In other words, the object either remains at rest or keeps moving in a straight line at a uniform speed until an external force causes it to change.

2. The significance of the law of inertia:

The law of inertia provides important theoretical support for the basis of motion. It helps us understand why an object continues to be in motion, or why an object remains stationary without knowing that an external force is acting on it. This law was also the starting point for Newtonian mechanics, which provided the basis for the subsequent laws of motion and the concept of force.

The law of inertia has a wide range of practical applications, not only in everyday life, but also in the field of scientific research and engineering. For example, the inertia of the vehicle will affect the driving and braking, and the inertia of the aircraft will affect the change of the navigation trajectory.

In conclusion, the law of inertia is one of the basic principles for understanding the motion of objects and the influence of external forces, which lays the foundation for the development of classical mechanics.

Characteristics of the theorem of inertia

Invariance of the state of motion of an object:

The law of inertia emphasizes that an object will remain in its state of motion when there is no external force acting on it. If the object is stationary, it remains stationary; If the object moves in a straight line at a uniform speed, then it keeps moving in a straight line at a uniform speed. This reflects the object's resistance to state changes.

An external force is required to change the state:

The law of inertia states that to change the state of motion of an object, an external force must be applied. In other words, an object does not change its state of stationary or uniform linear motion on its own, and an external force is required to cause a change of state.

The impact of quality:

The inertia of an object is related to its mass. The more massive the object, the greater its inertia, i.e., the greater its resistance to state changes. This also explains why massive objects usually change more slowly when subjected to external forces.

Applications of daily life and scientific research:

The law of inertia can not only be observed in daily life, such as the inertia of the vehicle makes us need to brake to stop, and the inertia of the aircraft affects the direction of navigation, etc., but also has a wide range of applications in the field of scientific research and engineering.

Newton's first law of movement is referred to as Newton's first law of slow land. Also known as the law of inertia. A common full formulation: any object must remain in a uniform linear motion or at rest until an external force forces it to change its state of motion.

In classical mechanics, the law of conservation of momentum applies to inertial frames of reference. An inertial frame of reference refers to a frame of reference that is not subjected to external forces such as acceleration, rotation, etc.

In a non-inertial frame of reference, the law of conservation of momentum no longer applies. A non-inertial frame of reference is a frame of reference in which acceleration or rotation occurs due to an external force. In such a frame of reference, the momentum is no longer conserved due to the presence of additional forces like inertial force, centrifugal force, Coriolis force, etc.

To apply the law of conservation of momentum, it is often necessary to switch to an inertial frame of reference for which segment of the analysis to perform, and to consider the effects of additional forces, such as inertial forces. In this way, the applicability of the law of conservation of momentum in calculations can be ensured.

It is important to note that in relativistic mechanics, the law of conservation of momentum can be generalized to more general cases, including non-inertial frames of reference. By introducing four-dimensional momentum and the four-dimensional conservation law, it is possible to describe the conservation of momentum in non-inertial frames under the framework of relativity. However, this involves more complex mathematical and physical generalizations, beyond the scope of classical bright-permeability mechanics.

The three erroneous statements about inertia are:1. Moving objects have inertia, while stationary objects have no inertia

2. The inertia of objects with large moving speed is large3. "Habitual dislike and sexuality" is the "law of inertia".4. The smaller the gravity, the smaller the inertia; When the object is in weightlessness, the inertia disappears

5. Inertia is a special force

Inertia is one of the most important concepts in junior high school physicsIt is a bridge for the correct understanding of force and motion, and the concept of inertia is not clearly understood, and even affects the construction of high school mechanics knowledge. In junior high school physics teaching, due to the coexistence of inertia and abstraction, it brings certain difficulties to students' understanding.

The law of inertia is missingIn an effective frame of reference, the object always maintains a uniform linear motion or a state of rest when it is not in equilibrium by any external force or force. (Wang, China, 2010).

It's like when you're in a car, and the car suddenly brakes suddenly, and your body suddenly leans forward.

When any object is not subject to external force, it must maintain its original state of motion, the resting person remains stationary, and the original moving person continues to do constant velocity linear motion, which is called the law of inertia. Also known as Newton's first law of motion.

Let's take a look.

Question: What is Newton's second law?

Newton's second law of motion is commonly formulated that the magnitude of an object's acceleration is proportional to the force, inversely proportional to the mass of the object, and proportional to the reciprocal of the mass of the object; The direction of acceleration is the same as that of the applied force.

Let's take a look.

Asking questions is about action and reaction, right?

Ask what about the third law.

The answer is also known as the "law of action and reaction". One of the important laws in mechanics. The forces between objects are always reciprocal, and when object A is acted upon by object B, object B must be reacted to by object A at the same time.

The action and reaction forces are equal in magnitude, opposite in direction, and in the same straight line.

This is Newton's third law.

Asked a question, understood.

Listen to Albert Einstein talk about the beginning of physics: the law of inertia.

Newton's first law is the law of inertia.

Inertial frame of reference.

The definition describes all motion relative to a frame of reference. Depending on the choice of frame of reference, the description of motion, or the form of the equation of motion, will also be different. In some frames of reference, objects that are not subject to force will remain at rest or in a state of uniform linear motion, and such frames of reference will have a uniform passage of time, and space will be uniform and isotropic; In such a frame of reference, the equations describing motion have the simplest form.

Such a frame of reference is an inertial frame of reference, also known as an inertial frame of reference or an inertial frame.

If s is an inertial frame of reference, then any frame of reference that moves in a linear motion of constant velocity for s is an inertial frame of reference; The frame of reference for the accelerated motion of s is a non-inertial frame of reference. All inertial frames of reference are equivalent.

Non-inertial frames. Also known as a non-inertial frame of reference, it is an object that accelerates relative to the ground inertial frame. In non-inertial frames, Newton's first law does not hold.

There are infinite types of non-inertial frames of reference. In classical mechanical mechanics, any frame of reference that invalidates the "Galilean principle of relativity" is called a "non-inertial frame of reference". For example, an accelerated frame of reference; a frame of reference for accelerated vibrations; ......A frame of reference for random arbitrary acceleration motion, and so on.

i.e. any frame of reference that renders Newton's first and Newton's second laws no longer valid. In classical electrodynamics, any frame of reference that invalidates Einstein's principle of relativity is a so-called "non-inertial frame of reference". For example, any reference frame that makes Lorentz's law of electromagnetic force f=qe+qv b, or Maxwell's equations no longer hold.

Definition of inertial and non-inertial frames.

Inertial frame of reference, referred to as inertial frame. Any frame of reference in which Newton's first law of motion is established is an inertial frame. The frame of reference for uniform linear motion relative to a certain inertial frame is an inertial frame. Newton's first law of motion is equivalent for all frames of inertia.

Non-inertial frame of reference, referred to as non-inertial frame. It is a frame of reference for accelerating motion relative to an inertial frame. Any frame of reference in which Newton's first law of motion does not hold is in a non-inertial frame. For example, when considering the rotation of the Earth, the Earth is a non-inertial frame.