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将非重力场或非地球系统中的类竖直平面运动模型(如圆周运动、单摆、平抛运动等),通过与重力场或地球系统中的常见竖直平面运动模型(如圆周运动、单摆、平抛运动等)类比,找出类重力、类重力加速度以及其他物理量的等效形式,即可将该问题用竖直平面运动模型的处理方法得以解决.一、类竖直平面内圆周运动问题例1 (第二十四届物理奥林匹克竞赛题)如图l所示,一块光滑的平板能通过绕水平固定轴 HH′转动来调节其与水平面所成的倾角.板上一根长为 l=1.00 m的轻细绳,它的一端系住一质量为 m 的小球 P,另一端
To model vertical plane motions (such as circular motions, pendulums, and panning motions) in non-gravity or non-earth systems, through common vertical plane motion models in gravitational or earth systems (such as circular motion, Single pendulum, flat-throw motion, etc.) analogy, to find out the equivalent form of gravity, gravity-like acceleration, and other physical quantities, the problem can be solved by the vertical plane motion model processing method. First, in the vertical plane Example of Circular Motion Example 1 (Twenty-fourth Physics Olympiad Question) As shown in Fig. 1, a smooth flat plate can be adjusted by tilting around a horizontal fixed axis HH’ to form a horizontal angle with the horizontal plane. For a l-1.00 m string, one end of it is tied to a ball P of mass m and the other end