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浮力综合问题的研究对象一般不止一个,如果所研究的对象有两个或两个以上,用整体法分析往往能独辟蹊径。1、取液体和容器中的物体为整体。图1例1如图1所示,底面积为50cm2的薄圆柱形容器内盛有水,水面漂浮一木块,木块上放有重2N的金属块,当把金属块从木块上取下,容器底所受压强
The buoyancy synthesis problem generally has more than one research object. If there are two or more objects studied, the analysis using the holistic approach can often be unique. 1. Take the liquid and the objects in the container as a whole. Fig. 1 Example 1 As shown in Fig. 1, a thin cylindrical container with a bottom area of 50 cm2 contains water, and a wooden block floats on the water surface. A metal block weighing 2N is placed on the block, and the metal block is taken from the block. Under the pressure of the bottom of the container