“积木搭桥问题”的改编与分析曲显林（江苏省常熟市冶塘中学２１５５５４）参加物理竞赛辅导的老师，除了利用好现有的竞赛资料外，最好能根据学生实际，适当地编写或改编一些竞赛题，也可动员学生自己编写竞赛题，例如有这样一道物理竞赛题：原题用２ｎ块质量均匀分布... The Adaptation and Analysis of the “Block Bridge Problem” Qu Xianlin (Jangtang Middle School 215554, Changshu City, Jiangsu Province, China) The teacher who participated in the physics competition coaching, in addition to using the existing competition data, is better able to write according to the actual situation of the student. Or adapt some contest questions, also can mobilize students to write contest questions by themselves. For example, there is such a physics contest title: the original title is distributed evenly with 2n blocks of mass...