用割补法巧解物理题孙立安（湖南隆回二中，４２２２００）在分析和解答物理习题时，常可将研究对象及有关的图形、图线，通过合理、恰当的假设，宏观的分割或填补，使非对称形体变为对称形体，使非理想模型变为理想模型，使隐含条件和关系充分显露，从而达到化难为易，化... Solve the physical problem skillfully by means of the cutting method Sun Li’an (Hunan Longhui IIzhong, 422200) When analyzing and answering physical exercises, it is often possible to use the reasonable and appropriate assumptions and macroscopic divisions of the research objects and related graphs and graphs. Fill, make the asymmetrical body into a symmetrical body, make the non-ideal model into an ideal model, so that the implicit conditions and relationships are fully exposed, so as to achieve difficult to change,...