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目前我们的中学物理实验,对惯性定律演示仪器的研究尚未完全突破.换言之,也就是对动态物体惯性的演示仪器的研究至今进展甚微.因此,教师在讲授动态物体惯性时,不能结合仪器,采取边演边教的授课方式使学生获得生动的感性认识,以致学生对动态物体惯性的概念也就得不到充分的理解.为此,笔者认真研究了现有的惯性演示仪器,在理解现有仪器的原理的基础上,尝试进行了惯性定律演示器的改进研究.1现有教具装置图(见图1所示)
At present, our secondary physics experiment has not completely broken through the research on the inertial law demonstration instrument, in other words, the research on the inertial demonstration instrument of dynamic body has made little progress so far.Therefore, when teaching the dynamic inertia of the object, the teacher can not combine the instruments, Adopting the teaching methods of side-line teaching to make the students get a vivid sensibility, so that the students can not fully understand the concept of the dynamic inertia of the living body.Therefore, the author carefully studied the existing inertial demonstration instruments, Based on the principle of instrumentation, we tried to improve the inertial law demonstrator.1 The existing teaching fixture installation diagram (see Figure 1)