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浮力是初中物理学习中的一个重点内容,也是物理教学中的一个难点内容.新教材中对浮力的计算要求有所降低,然而同学们在遇到这部分的题目时仍不知该用哪种方法解题,往往凭自己的主观臆断去做题,导致较高的错误率.因此,笔者结合历年的巾考题来谈谈关于浮力几个类型的问题该如何解答.一、利用称重法求浮力例1(2015·淮安)在“探究影响浮力大小的因素”实验巾,物体A静止时,弹簧测力计示数分别
Buoyancy is a key content in junior high school physics study and also a difficult content in physics teaching.New teaching materials have lowered requirements for buoyancy calculation, however students still do not know which method should be used in the problem of this part Solve the problem, often with their own subjective assumptions to do the question, leading to a higher error rate.Therefore, I combine the towel test questions over the years to talk about the buoyancy of several types of problems how to answer.First, the use of weighing buoyancy Example 1 (2015 · Huaian) In the “explore the factors that affect the size of the buoyancy,” the experimental towel, the object A stationary, the spring dynamometer showed the number of