在解决物理问题时,挖掘隐含条件是解题的突破口,下面通过—道例题的分析,谈一下最大速度的隐含条件.例质量为m带电量为+q的物块放在倾角为a的绝缘斜面上,物块与斜面的动摩擦因数为μ,设整个装置置于磁感应强度为B的匀强磁场中,方向垂直纸面向里,如图1所示斜面足够长(utanα).( In solving physical problems, the mining of implicit conditions is the breakthrough point for solving problems. The following analysis of the example problem of the road, talk about the implied conditions of the maximum speed. Example mass is the charge of +q of the block placed in the inclination of a On the insulating slope, the dynamic friction coefficient between the block and the slope is μ, and the whole device is set in a uniform magnetic field with a magnetic induction strength of B. The vertical paper faces inward, as shown in Fig. 1 and the slope is sufficiently long (utanα).