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2013年安徽高考理综第24题是一道物理计算题,考查简谐振动及力的平衡。试题第(4)问是对斜面体M运用受力分析的隔离法得出结论。笔者认为若对物块m和斜面体M运用整体法进行受力分析更为简便。一、原题如图1所示,质量为M、倾角为α的斜面体(斜面光滑且足够长)放在粗糙的水平地面上,底部与地面的动摩擦因数为μ,斜面顶端与劲度系数为k、自然长
2013 Anhui college entrance examination rationale for comprehensive 24th is a physical calculation, examines the simple harmonic vibration and balance of power. Question (4) is to ask the bevel M body force analysis of the isolation method to draw conclusions. I believe that if the block m and bevel M using the whole method of force analysis easier. First, the original title shown in Figure 1, the mass M, inclination angle α (slope smooth and long enough) on the rough level ground, the bottom and the ground dynamic friction coefficient μ, the slope of the top and the stiffness coefficient For k, naturally long