选修3-2教材中有一道关于加速度计的问题,由此以加速度计为题根展开的各种变形题目层出不穷,源于课本又高于课本.最近上海五校自主招生试题中更是将其改编为一道开放性的实验试题.题根问题的探讨研究有利于考生对问题实质的理解和掌握,并实现举一反三、触类旁通的学习目的.基于此,笔者将对以加速度计为题根的问题进行赏析,以期能够起到抛砖引玉的作用,使更多的人关注题根问题的探讨研究. Elective 3-2 teaching materials on the issue of an accelerometer, thus the accelerometer as the root of the problem began to emerge in an endless stream, from the textbooks and textbooks are higher than the recent self-enrollment of Shanghai five schools more questions Adapted to an open experimental questions .To explore the problem of the root problem is conducive to the candidates to understand and grasp the essence of the problem, and to learn from one to the other, the analogy of bypass learning purposes.Based on this, the author will question the accelerometer as the root cause Appreciation, with a view to be able to play a valuable role, so that more people concerned about the problem of exploring the root of the study.