万有引力定律在天文学上的应用 人造卫星的教案示例（The application of the law of gravity in astronomy -- examples of lesson plans for artificial satellites）.doc

万有引力定律在天文学上的应用 人造卫星的教案示例（The application of the law of gravity in astronomy -- examples of lesson plans for artificial satellites） Own collection Think its useful So upload it to Baidu Share it with everyone! The application of the law of gravity in astronomy -- examples of lesson plans for artificial satellites I. teaching objectives 1. the study of the motion of planets around stars and the motion of satellites around planets Let students master the basic method of studying such problems: gravity as the centripetal force of objects to do circular motion 2. enable students to have a preliminary understanding of the launching, running, etc of man-made earth satellites Enable most students to build a more accurate picture in the mind Two, key and difficult analysis 1. the centripetal force of celestial motion is provided by gravity This thread of thought is the focus of this lesson 2. the first cosmic velocity is the minimum speed of satellite emission Is the maximum speed at which the satellite runs Their unity is the difficulty of this lesson Three, teaching aids Homemade synchronous satellite model Four, teaching process (1) introducing new courses 1. review questions: (1) what is the centripetal force formula for the circular motion of an object? Write out the relation between centripetal force and linear velocity, angular velocity and cycle respectively: (2) what is the law of universal gravitation? How can I use a formula? Answer or correct a students answer ) (3) what is the relation between gravity and gravity? What is the determinant of gravity acceleration? (students answer: the gravity of the object on the surface of the earth is a component of the gravity of the object being absorbed by the earth But the magnitude of this component is basically equal to the gravitational pull of the earth Incomplete The teacher supplements it ) 2. cited questions: according to what we learned before We know that there is mutual gravitation between all bodies Whats more, t