What Is Process Isolation?

Isolation method refers to the method of analyzing and researching a single object or a single process in a physical problem. In mechanics, the object to be analyzed is isolated from the related object system. As a research object, only the force of the object on the object other than the research object is analyzed, and the force of the research object on other objects is not considered. (Treated as an idealized environment).

Segregation

Advantages of the isolation method: it is easy to see the force of an object or the movement of a single process. The problem is more convenient and simple to handle, and it is easy for beginners to use. Isolation is used when analyzing the interactions between objects (or parts of an object) in a system.

"Isolate" an object from the system in the connected body. As a research object, analyze the force situation. According to the Newton's second law column equation, if the problem is more complicated and involves more unknowns, only "isolate" one There are not enough objects, and you must "isolate" the second and third objects. The general principle is that the number of equations listed is equal to the number of unknown quantities. This way of thinking about the problem of connecting bodies is called "isolation".

"Isolation method" and "program method" are widely used thinking methods in the analysis of mechanical problems.

When to use the holistic approach. When is isolation used?

If the required force is the force between two objects (internal force of the system), then it must be done by isolation method. Generally, the object with less force is selected for detailed analysis. If the required force is the two objects and The external force (external force of the system), then it can be done using the holistic method, and the interaction force between the object and the interior of the object can be ignored.

For example: a spring is connected to an object on both the left and right sides, and then a force is pulled to move one of the objects.

At this time, they should be considered as a whole, and the acceleration can be provided by external forces. The acceleration is calculated using the second law of the two. This acceleration is common to both objects (that is, the acceleration of both objects is a), and then isolated Look, just look at the object that is relatively less stressed, and then use Niu Er's second law again. The combined external force that this object receives provides the acceleration of this object, and you can find the force on the spring.