论文部分内容阅读
随着素质教育和新课程改革的深入,学习物理的目的之一就是要培养同学们能够理论联系实际,学以致用,圆周运动是高中物理中的重要知识之一.与此相关的实际问题比比皆是,近几年高考试题中也屡见不鲜,这应引起同学们的高度重视.现举例分析如下:例1生产流水线上的皮带传输装置如图1所示.传输带上等间距地放着很多半成品.A轮上方装有光电计数器s.它可以记录通过s处的产品数,已经测得A、B半径分别rA=20cm、rB=10cm,相邻两产品距离为L=30cm,1min内有41个产品通过s处.求:
With the deepening of quality education and new curriculum reform, one of the goals of studying physics is to train students to connect theory with practice and apply what they have learned. Circular motion is one of the important knowledge in high school physics. All are high school exam questions in recent years are also common, this should cause students to attach great importance. Now an example analysis is as follows: Example 1 belt conveyor on the production line shown in Figure 1. The conveyor belt is placed on a lot The semi-finished product A wheel is equipped with an optoelectronic counter s. It can record the number of products passing through s. The measured radiuses of A and B are rA=20cm and rB=10cm respectively. The distance between two adjacent products is L=30cm. Within 1min 41 products through s. Find: