高三物理知识点复习(国外英文资料).docVIP

高三物理知识点复习(国外英文资料) Education information] I. teaching content: Third, physical knowledge review 1: force and object balance (1) The three common forces in Mechanics: gravity, elasticity, friction, and especially static friction, are often the subject of the college entrance examination. As the static friction varies with the relative motion of the object, it is very easy to make mistakes in the analysis. The students must make great efforts to make sure the static friction force. Concurrent force under the action of the equilibrium of the body is an important problem in physics in senior high school, almost every year is compulsory. Simple examination of the content of this chapter to select, fill in the blanks, the difficulty of moderate, and other chapters combined with a comprehensive problem, but also the future direction of college entrance examination. Two. Tamp down the basics (1) the concept of force: force is the action of an object on an object. The basic characteristics of the 1. force (1) force of the material: force can not be separated from the object and independent existence. (2) interaction of forces: the interaction of forces is mutual. (3) force of vector: force is a vector, both size and direction. (4) the independence of force: force has independent function. When it is expressed by Newtons second law, the acceleration produced by the resultant force is equal to the vector of acceleration produced by several components. Classification of 2. forces: (1) according to the classification of properties: such as gravity force, electric force and magnetic force, elastic force, friction force, molecular force, etc. (2) according to the effect of force classification: such as tensile force, thrust, support force, pressure, power, resistance, etc.. (two) common three kinds of force. 1. gravity: gravity is the force that causes the object to attract because of the attraction of the earth. (1) the magnitude of gravity: the magnitude of gravity is equal to Mg