运用等效观深化绳-船模型

Deepening the Rope-Boat Model Using Equivalent View

绳船模型的相关解答仅注重船速求解,未探讨不同运动分解形式是否等效,难免遗留不少理解的缺憾.运用等效观研究了船的不同运动分解形式之间的等效问题,结果表明,3种基本分运动不仅与合运动相互等效,而且彼此等效,解释了学生理解绳–船模型的疑惑,提出了相应的教学建议.

The relevant solutions of the rope-boat model only pay attention to the solution of boat velocity,and do not discuss whether the different forms of motion decom position are equivalent,which inevitably leaves many defects of understanding.The equivalence pro blem between the different forms of motion decom position of the boat is studied by applying equivalent view,and the results show that the three basic partial motions are equivalent not only to the com bined motion,but also to each other.The students doubts in understanding the rope-boat model are explained,and the corresponding teaching suggestions are put forward.