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二力平衡是初中力学部分的重要内容,也是后续内容学习的关键、基础和主要的分析方法。学好二力平衡很关键,在实际的教学中却因例题的选取不当,给师生带来很大困惑。
The balance of the two forces is an important part of the mechanics of junior middle school and also the key, basic and main analytical method for the subsequent content learning. Learning to balance the two forces is the key, but in the actual teaching but due to the improper selection of examples to teachers and students to bring great confusion.