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1、学习必备欢迎下载海天教育学科教师辅导教案年级：初四年级辅导科目：物理学员姓名：学科教师：张玉克授课类型T（压力）T（固体压强）T（液体压强）星级授课日期及时段教学内容|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页，共 23 页学习必备欢迎下载一、固体的压力和压强1、压力：垂直压在物体表面上的力叫压力。压力并不都是由重力引起的，通常把物体放在桌面上时，如果物体不受其他力，则压力 F=物体的重力G；固体可以大小方向不变地传递压力。例 1：重为 G 的物体在承面上静止不动。指出下列各种情况下所受压力的大小。2、研究影响压力作用效果因素的实验：例
2、 2：【10 广安】我们在探究问题时，经常用到“控制变量法”、“转换变量法”、“等效替代法”、“理想模型法”等重要实验方法。探究“压力作用效果与哪些因素有关”的操作过程如图12 所示。甲、乙说明：受力面积相同时，压力越大压力作用效果越明显。乙、丙说明 压力相同时、受力面积越小压力作用效果越明显。概括这两次实验结论是：压力的作用效果与压力和受力面积有关。本实验研究问题时，采用了控制变量法。和 对比法3、压强：定义：物体单位面积上受到的压力叫压强。物理意义：压强是表示压力作用效果的物理量；公式p=F/S 其中各量的单位分别是：p：帕斯卡（Pa）；F：牛顿（N）S：米（m2）。A 使用该公式计算压强
3、时，关键是找出压力 F（一般 F=G=mg）和 受力面积 S（受力面积要注意两物体的接触部分）。T-固体压力压强F F F F F|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P
4、1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10
5、F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN1
6、0T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C
7、4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD
8、5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L
9、9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编
10、码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7学习必备欢迎下载B 特例:对于放在桌子上的直柱体（如：圆柱体、正方体、长放体等）对桌面的压强p=gh 应用：当压力不变时，可通过增大受力面积的方法来减小压强如：铁路钢轨铺枕木、坦克安装履带、书包带较宽等。也可通过减小受力面积的方法来增大压强如：缝一针做得很细、菜刀刀口很薄压强单位：牛/平方米 N/m2 1帕=1牛/平方米 1Pa=1N/m2 注意单位换算：长度单位：1米=_分米=_厘米=_毫米面积单位 1平方米=_平方分米=_平方厘米=_平方毫米补充：质量单位 1 千克=1000克 1吨=1000千克 G=mg g=
11、10N/kg 体积单位 1 立方米=立方分米=立方厘米=立方毫米 1升=毫升 1升=1立方分米 1毫升=1立方厘米例 3：【10 烟 台】在日常生产和生活中，有时需要增大压强，有时需要减小压强，在图1 所示的事例中，属于增大压强的是例 4：【10 百色】图中的推土机有宽大的履带和锋利的土铲，下列说法正确的是（）A宽大的履带是为了减小压力B宽大的履带是为了增大压强C锋利的土铲是为了减小压力D锋利的土铲是为了增大压强例 1如下图所示，有五块完全相同的砖以三种形式摆放在水平地面上。(a)是两块迭放；(b)是单块砖平放；(c)是两块砖并排平放。它们对地面的压强分别为Pa、Pb、和 Pc，则（）图|精.
12、|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 3 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H
13、1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L
14、7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:
15、CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M
16、5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9
17、 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T
18、5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7学习必备欢迎下载说明：（1）计算压强时，所谓面积S，应当是
19、实际受力作用的面积。（2）计算压强要注意单位的统一，只有压力的单位 用牛顿，面积的单位用平方米，压强的单位才是帕斯卡。例 3 封冻的江河冰面最大能承受的压强是4104帕斯卡，一台履带式拖拉机的质量是5200千克，两条履带跟地面接触的面积共1.5 米2，这台拖拉机能不能从冰面上通过？说明:（1）物体受压后形状要改变，甚至会被破坏，这决定于压强的大小而不是压力的大小。（2）压力的大小不一定等于施压物体的重力，只有物体在水平面上时，压力才等于物体的重力。在解这类问题时，必须写出公式的推导过程，以防压力和重力 这两个概念混淆练习1 载重汽车的轮子比普通汽车的轮子多，轮胎比普通汽车的轮胎宽，这是为了增大
20、，减少对地面的。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 4 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5
21、I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3
22、 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1
23、F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7
24、文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:C
25、D8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5
26、R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7学习必备欢迎下载一、产生原因:因为液
27、体受到重力作用和具有流动性二、液体压强的测定 压强计压强计的原理：当探头上的橡皮膜受到压强时，形管两边液面出现高度差，两边高度差表示出压强的大小，压强越大，液面高度差三、液体压强特点的总结1.液体内部向各个方向都有压强。2.在同一深度，液体向各个方向的压强相等;3.液体压强还与液体深度有关:深度增大,液体的压强增大。4.液体压强液体密度度有关:在深度相同时，液体密度越大，压强越大四、如何计算液体内部的压强设想在液面下有一深度为h、截面积为 s 的液柱。计算这段液柱产生的压强，就能得到液体内部深度为 h 处的压强公式。公式推导步骤:1:这个液柱的体积:V=sh 2 这个液柱的质量:m=v=Sh
28、T-液体压强|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 5 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9
29、C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 Z
30、D5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9
31、L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档
32、编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8
33、P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R1
34、0F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7学习必备欢迎下载3 这个 液柱有多重?对
35、平面的压力是:F=G=mg=gsh 4 平面受到的压强：P=F/S=gh 液体压强的公式:P=gh p 液体在任一深度的压强 液体的密度g 常数 N/kg h 深度指从自由液面到液体内部某一点的竖直距离注意：(1)p gh 是由 P=F/S 推导出的，P=F/S 适用任何情况，关键是找出受力面积上对应的压力；p gh 适用于求液体的压强。(2)同种液体(密度已确定)的压强只跟深度有关，深度越大，压强越大，而与液体的多少和容器的形状无关。(3)所谓深度，与我们平常所说的高度是相反的，它是从液面开始往下计算，而高度是从下往上计算，也就是说越高的地方是深度越浅，越深的地方位置越低。深度的理解现象解释
36、.大坝的横截面为什么均为上窄下宽，是因为液体内部的压强随深度的增加而增大,坝底受到水的压强大,下宽能耐压.深海鱼类被捕捞上岸后会死亡，带鱼等深海鱼类长期生活在深海当中,内脏器官适应了深海中巨大的压强。一旦离开海洋,由于外界压强的忽然降低,内脏器官会爆裂而导致死亡。.潜水员穿的深海潜水服比浅海潜水服要厚重一些，液体压强随深度的增加而增大，故深海潜水服要比浅海潜水服更耐压，更厚重些。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 6 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P
37、1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10
38、F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN1
39、0T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C
40、4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD
41、5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L
42、9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编
43、码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7学习必备欢迎下载五、液体压强应用 连通器六、液体压强的传递1.帕斯卡原理P1=P2 即因为 S1S2,所以 F1、“或“=”)14、在火车站和地铁站台上，都画有一条安全线，当火车快速开过时，人越过这条线就会有危险这是因为，火车开动时，靠近火车的地方气体流速大，压强专题训
44、练考点一：压力和压强。1.（2014?广州）图 10 水平雪地上，穿着雪橇的芳芳总质量为70Kg，没有陷入雪地；而穿着运动鞋的小明总质量为 50Kg，却深陷雪地。下列说法正确的是（）A 芳芳对雪地的压力比小明的小B 芳芳对雪地的压力和小明的一样|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 15 页，共 23 页文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H
45、1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L
46、7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:
47、CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M
48、5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9
49、 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T
50、5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y3 ZD5H1F9L9L7文档编码:CD8P1M5R10F9 HN10T5I9C4Y