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例1 如图1所示是美国轰炸伊拉克的精确制导导弹,正在飞向巴格达.请在图中画出导弹的受力示意图. (03年黄冈)错解 如图2. 分析 图2漏掉了两个力.此导弹除受到重力作用,还受到推进器的推力作用和在飞行过程中与空气的摩擦阻力作用.推力的方向和导弹前进方向相同,摩擦阻力的方向和导弹前进方向相反.正确作图如图3.
Example 1 As shown in Figure 1, the United States bombed Iraq’s precision guided missiles and is now flying to Baghdad. Please draw the diagram of the missile’s force in the diagram. (Huanggang in 2003) The wrong solution is shown in Figure 2. The analysis diagram 2 is missing. Two forces. In addition to the gravity, the missile is also subjected to the thrust of the thruster and the frictional resistance with the air during the flight. The direction of the thrust is the same as the forward direction of the missile, and the direction of the frictional resistance is opposite to that of the missile. Drawings are shown in Figure 3.