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斜面物理模型在高考中常常考查受力分析、力的合成与分解、牛顿运动定律等力学基础知识,还有把斜面放在加速或减速上升的升降机中,甚至将斜面物理模型与其他物理模型联合进行考查,对学生的能力要求较高。下面就斜面物理模型进行分类:一、斜面上物体的受力分析1.如图1所示,在倾角为θ=30°的粗糙斜面上有一重为G的物体,若用F=G/2与斜面底边平行的恒力推它,恰好能使它做匀速直线运动。则物体与斜面之间的动摩擦因数
Inclined physical model in college entrance examination often examine force analysis, force synthesis and decomposition, Newton’s law of motion and other basic mechanics of mechanics, as well as the bevel on the acceleration or deceleration of the lift, and even the physical model of the bevel and the joint physical model To test, the ability of students demanding. Below the physical model of the bevel classification: First, the force on the bevel analysis 1. As shown in Figure 1, the tilt angle θ = 30 ° of the rough bevel on a G-weighted objects, if the use of F = G / 2 Constant force parallel to the bevel push it, just to make it do uniform linear motion. The dynamic friction factor between the object and the bevel