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考点指要高考中,摩擦力结合牛顿定律、功能关系的考查是重点和难点,传送带也是一个常见的经典模型。现结合高中物理课堂教学遇到的各种传送带问题,对动力学和功能关系予以剖析。传送带问题通常从四个角度进行:一是顺时针运行、逆时针运行两种可能,二是匀速、加速、减速三种可能,三是传送带上的小物体有初速度为零或者初态与传送带共速两种可能,四是物体受到静摩擦力或者滑动摩擦力两者可能。下
Test points that the college entrance examination, friction combined with Newton's law, the functional relationship of the examination is the focus and difficulty, the conveyor belt is also a common classic model. Now combined with high school physics classroom teaching encountered a variety of conveyor belt problems, dynamic and functional relationships to be analyzed. Conveyor belt problems are usually carried out from four angles: First, run clockwise, counterclockwise two possible, the second is uniform speed, acceleration, deceleration three possible, three small objects on the conveyor belt initial velocity is zero or initial state with the conveyor Co-speed two possibilities, the fourth is subject to static friction or sliding friction may be both. under