在学习本章知识的过程中,初学者常犯的错误主要表现在:(1)对物体受力情况不能进行正确的分析,通常出现在对弹力和摩擦力的分析与计算方面,特别是对摩擦力(尤其是对静摩擦力)的分析;(2)对运动和力的关系不能准确地把握,如在运用牛顿第二定律和运动学公式解决问题时,矢量公式中的 In the process of learning this chapter, beginners often make mistakes mainly as follows: (1) The correct analysis of the force condition of an object cannot be performed. Usually it is in the analysis and calculation of the elastic force and friction force, especially the friction. Force (especially static friction) analysis; (2) The relationship between motion and force can not be accurately grasped, such as in the use of Newton’s second law and kinematics formula to solve the problem, the vector formula