2017骄子之路第4章节第3节圆周运动.ppt

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1、2017高三一轮总复习物理Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.必修二第四章　曲线运动万有引力与航天Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0

2、.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.第三节　圆周运动Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientP

3、rofile5.2.0.0.Copyright2004-2011AsposePtyLtd.栏目导航1235基础知识整合热门考点研析方法技巧归纳考题随堂演练4物理模型构建Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.基础知识整合Evaluati

4、ononly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.某人驾车正在平直路上前进，突然前方出现了一堵很长的墙，此人要想不撞墙，是拐弯好呢，还是急刹车好？【思路引导】1.拐弯情况下，车做圆周运动，哪个力来提供向心力？如何计算位移？2．刹车情况下，车做减速运动，哪个力来提

5、供加速度？如何计算位移？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.【解析】本题属于圆周运动的考查题目，解题的关键是建立运动模型，然后结合运动学公式和牛顿第二定律列式分析．综上所述可知，急刹车前进的距离小，效果好．Evaluationonl

6、y.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.匀速圆周运动1．描述圆周运动的物理量(1)线速度①定义：描述做圆周运动的物体沿圆弧运动______的物理量．(2)角速度①定义：描述做圆周运动的物体绕圆心运动______的物理量．知识点1快慢快慢Evaluationonl

7、y.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.(3)向心加速度①定义