What is the nature of the force and the effect of the force

"Qualitative force" and "effect force" are two different ways of classifying force, the same force is called this name is qualitative force, and the other name may be effect force. I use the following two methods to distinguish between them. The first is the recommended method:

Let's figure out the effect power first, and the rest is the nature force. The effect force is defined according to the effect of the force, and the qualitative force is defined according to the nature of the force itself, such as "elastic force", it is the qualitative force, its definition is defined from "deformation", "restitution" and "generating force", it is not only the process of elastic force generation, but also the nature of elastic force, it has no trace of effect at all, it can never be said that it is powerful because of "elasticity", and the effect force can be said in this way: because it is the force that makes the object move, it is called "power"; Because the effect of the force of objects is to attract objects to each other, it is called "attraction"; Because it has a pressure effect on the plane, this force is called "pressure".

Another example is that "friction" is a qualitative force, because there is no trace of "friction" in its definition, but "sliding friction", "rolling friction", "static friction" are effect forces, because literally there are already force effects such as "sliding" and "static". In addition, in addition to gravity, the concept of other property forces is relatively broad, and generally contains several common effect forces, and the effect force can be borne by a certain property force, but no effect force can be said to contain a certain property force. The second method is the one I don't want my students to use, which is that there are only six types of physical forces in high school: "gravitational force, elastic force, frictional force, molecular force, electric field force, and magnetic field force".

ps：**。

Field Force: Gravity.

Contact Force: Pull, Support, Elasticity, Buoyancy, Friction, Thrust.

All of the above forces can be either power or resistance.

The teacher who came up with this question is a person who has unclear concepts, at least the logic of the lecture is problematic, but he wants to pick out the concepts to death.

I am glad that the landlord has a problem, please forgive me if there is a mistake.

The difference between the force of nature and the force of effect is.

1. The force is the force defined by its essence; An effect force is a force defined in terms of macroscopic effect.

2. The force named according to the cause of the force is the qualitative force; The force named after the effect of the force is the effect.

3. What can show the effect is the effect force; What doesn't have an effect is the qualitative force.

If an object is subjected to an effect force, we can know what happens to the object under the action of the force, the dynamic force makes the object move forward, the drag force reduces the speed of the object, and the buoyancy force makes the object float up;

For example, under the action of gravity, an object can rise or fall or not move, elastic force can compress or elongate an object, and friction can be either power or resistance.