077机械能守恒定律的应用(国外英文资料).doc

077机械能守恒定律的应用(国外英文资料) Goal of teaching Ask for physical knowledge. (1) the condition of the law of conservation of mechanical energy; (2) the physical meaning of the law of conservation of mechanical energy. 2. The advantages of using the law of conservation of mechanical energy to deal with problems, pay attention to training students to use the law to solve the problem, to cultivate the habit of students correct analysis of physical problems. Education, which penetrates the method of physics, emphasizes the importance of analyzing and dealing with the problem of transformation and conservation of energy. Second, the key, difficult analysis 1. The law of conservation of mechanical energy is an important law in mechanics knowledge. Knowledge is a key. Especially the law of the applicable conditions and physical significance, and specific applications as high requirements. 2. The law of conservation of mechanical energy in the understanding and application of suitable conditions, for most students, although after a phase of learning, often is not enough, still all sorts of mistakes. It also suggests that this is the difficulty of teaching. triage A number of slides, a projection lantern, a colored pen, a string, a small ball, a thin rod with two small balls, a pulley, a block of m, m, a string. Fourth, teaching process design (1) review and introduce new lessons Ask questions. (1) the law of conservation of mechanical energy. (2) the condition of the conservation of mechanical energy. According to the students answers, the evaluation and summarization of the laws of the conservation of mechanical energy is explained. (2) the basic ideas and methods for solving the physical problems are analyzed using the law of conservation of mechanical energy. Design of teaching process Examples and their analysis. Question 1 slides and experimental demonstration. As shown in figure 1. A long L cord, fixed point O, rope at the other end is A mass of m ball. The ball at first pull t