The method of judging the connection of the chemical high school plate and the shape of the spring group is the same as that of the parallel spring group. It is recognized that the two springs in the cymbal are composed of a series spring group; in accordance with algebra and relationship, the strength of the spring group The degree factor will become larger. The two springs are composed of parallel spring sets. It is the physical nature of the parallel spring group. How is the I spring connected? With the influence of the influence, the students think that two springs are composed of a series spring group; three springs are also a series spring group; three springs The composition is a hybrid spring set.
This set of answers is all wrong. The correct answer is: two springs are composed of parallel springs; three springs are composed of a hybrid spring group; three springs are composed of parallel spring groups.
Judging the connection of the spring group, grasping the essence is the key. The specific judgment method is given below.
Imagine using force F to push the vibrator 2, and move w to the left or right by the distance Ar; analyze the force of each spring and spring group, and list the spring group stiffness coefficient expression. If it is met: Imagine force F to push the vibrator m, so that it moves to the right by the distance Ac. Springs 1 and 2 are respectively subjected to the elastic force heart = 々 heart 2 / direction are right to the right - the spring group is affected by the corpse = corpse 1 + corpse 2, The stiffness coefficient is in accordance with the relationship 2, so the parallel spring group consisting of two springs.
々1々2 八々1+々2). The two springs of 1 and 2 are equivalent to a spring with a stiffness coefficient of 々12. It is judged by the same method that the spring solves such a shape-like spring connection problem. It is not possible to simply look at the surface form, but should analyze it from the analysis. Their physical nature begins with the correct determination of how they are connected. What is the physical nature of the string and parallel spring sets, in line with the reciprocal and relationship, the stiffness coefficient of the spring group will become smaller. This is the physical nature of the series springs.
In parallel with the spring 3, three springs form a mixed spring group, and the strength = b + 々 3. The two springs are equivalent to a spring having a stiffness coefficient of 23, as determined by the above method, the spring is followed by the spring 1 The parallel spring group is composed of three springs, which are composed of parallel spring groups, and their stiffness coefficient
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