Mechanical movement, why add the word mechanical

If you don't know, you say you don't know! This is what was imposed on us from the very beginning of our studies! I conclude that the reason may be 1

Translated, translated words. Not advisable. 2.

Its motion is the change of kinetic energy and potential energy, that is, the change of mechanical energy, so it is called mechanical motion. 3 mechanical means fine. In other words, this movement can be precise.

Relative to thermal motion. If there is a doubt in physics, we must get to the bottom of it, otherwise there will be no gravitational force, and there will be no science of physics. Don't listen to the upstairs.

Turning a blind eye to it hurts others and oneself.

The word "mechanical" in the word "mechanical motion" refers to the fact that the motion of an object consists of a series of mechanical steps that can be simplified or abstracted into some basic mechanical action.

Mechanical motion usually refers to the motion of an object that can be broken down into a series of simple actions, such as: the rotation of gears, the sliding of pulleys, the movement of levers, and so on. These simple actions can be achieved by mechanical principles, such as:

The laws of mechanics, the laws of friction, the laws of motion, and so on.

Mechanical motion is of great significance in engineering, physics, robotics, and other fields because many problems in these fields require consideration of the mechanical motion of objects. For example, in engineering, mechanical motion is very important for designing the motion trajectory of robots, manufacturing machines, and so on; In physics, the influence of mechanical motion is also needed to study the laws of motion, mechanical properties, and so on.

Therefore, when describing the motion of an object, the word "mechanical" is added to emphasize that this motion is made up of a series of mechanical steps that can be simplified and abstracted into some basic mechanical action.

In physics, the process by which the position of an object in relation to another object, or the position of parts of an object relative to other parts, changes over time is called mechanical motion

First question.

Just roll the screw and you'll know.

Second question.

In the sliding friction pair, the follower is driven at a constant speed and under certain friction conditions, and the periodic movement phenomenon of stopping, walking, or slowing and fast. Crawling is a form of self-excited vibration in mechanical vibration. Each crawling cycle is divided into two phases:

One is the storage of energy, and the other is the immediate release of energy when it reaches a critical value. Creeping is a common abnormal state of movement in the sliding guide of a machine tool (see Machine Guide Rail). Crawling is manifested as vibrations that are imperceptible to the naked eye when it is mild, and beats over a larger distance when it is significant.

Creeping can significantly reduce the machining accuracy of the workpiece. In addition, the shock that can be caused when the clutch of the car is engaged, and the jumping that can occur when fine-tuning certain instruments are also examples of crawling. Crawling mostly occurs at low speeds.

There are many reasons for creeping: such as excessive normal load, small stiffness of elastic elements in the sliding system, large difference between static and dynamic friction between sliding pairs, and decreasing characteristics of friction coefficient and relative sliding velocity curve. The measures to prevent creeping are mainly to improve the friction characteristics between the sliding pairs, improve the stiffness of the system transmission chain, increase the damping of the system and reduce the weight of the sliding parts.

The ways to improve the friction characteristics include the use of friction pair materials with small friction coefficient, the application of anti-climb oil and grease with better performance, the change of pressure lubrication to hydrostatic pressure lubrication and the change of sliding friction to rolling friction. The problem of crawling and anti-crawling is still the subject of research. For example, the influence of the surface morphology of the friction pair on creeping is analyzed, the nonlinear relationship between friction force, relative sliding speed and crawling motion is discussed qualitatively and quantitatively, the critical speed of creeping is accurately calculated with the help of electronic computer, and better anti-creeping grease and friction pair materials are developed.

Hehe, it is to distinguish the subjective and physiological movements of creatures such as humans and animals. These are the problems of bioanalysis. Physically, it can be directly referred to as motion for short.

Because there are other movements, like thermal motion, life motion, sound motion, ......

It is impossible to distinguish without adding a machine.

Mechanical motion is the relative change of two points of an object, with heat and heat motion. It's not the same, and you can't tell it apart if you want to touch it.

Mechanical motion is the kinematics involved in the study of the motion and dynamics of ideal simple machinery (rigid body, frictionless).

It's just a name! And the name vividly reflects this state of movement! It's like mechanical energy, it's just a noun!

Mechanical motion refers to regular motion.

Let's distinguish between macro and micro!

This is a deviation from the translation, the English word for mechanical motion is mechanical motionSo in fact, mechanical not only has the meaning of mechanical, but also the meaning of force and mechanism, so the translation into Chinese is accurate: is an object under the action of force to do a certain mechanism of motion

Of course. Such as lever, rolling, and inclined planes are all commonly used types of machinery.

In physics, the process by which the position of an object in relation to another object, or the position of parts of an object relative to other parts, changes over time is called mechanical motion

Machinery can be understood here as physical, not complicatedly as machinery in a machine, so there is no need to be entangled.

A change in position is a mechanical movement.

Child, you have to understand that there are various forms of movement, and mechanical movement does not include changes in shape, etc., only changes in position. Therefore, when we generally deal with mechanical motion problems, we use particles instead of the objects we consider.

First of all, if you're looking at any reference book or source, whenever you mention mechanical movement, you will talk about the reference system. "When an object's position changes relative to another object, the object is in motion" In everyday life, how do you tell if an object is in motion? Now suppose A is an observer (regardless of whether he is moving now) and B walks past A and A feels that B is moving, which is "the position of one object has changed relative to another" (because if A had been moving and B had walked past A, the distance of AB would have changed, and if A had been walking slowly and B had walked past A, B would have been faster than A and the distance of AB would have changed).

It's "relative". You're running at the same speed as A, doesn't it seem like Neither A nor you have exercised? Similar to when you sit in a car, there is a car with the same speed next to you, and you look out the window as if the car is not moving, but if the car on the opposite side is stationary, using the car you are sitting in as a reference system, it seems that the stationary car is moving.

That is to say, things are not absolute, they are relative.

The mechanical motion of an object is macroscopic motion, and the molecular thermal motion is microscopic motion. The realm of the two-foot clump is different. The movement of molecular people is going on all the time, and the mechanical movement of objects needs to be supplied with energy.

Because mechanical motion is one of the most common and profound physical phenomena that people understand, it is one of the foundations of physics.