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1、1 F 37图 1 F 牛顿第二定律的应用第一类：由物体的受力情况确定物体的运动情况1.如图 1 所示，一个质量为m=20kg的物块，在F=60N的水平拉力作用下，从静止开始沿水平地面向右做匀加速直线运动，物体与地面之间的动摩擦因数为0.10.(g=10m/s2)（1）画出物块的受力示意图（2）求物块运动的加速度的大小（3）物体在t=2.0s 时速度v的大小.（4）求物块速度达到smv/0.6时移动的距离2如图，质量m=2kg的物体静止在水平面上，物体与水平面间的滑动摩擦因数25.0，现在对物体施加一个大小F=8N、与水平方向夹角=37角的斜向上的拉力已知 sin37=0.6，cos37=0.
2、8，取 g=10m/s2，求（1）画出物体的受力示意图(2)物体运动的加速度（3）物体在拉力作用下5s 内通过的位移大小。2 方法归纳:自主练习:1.一辆总质量是4.0 103kg 的满载汽车，从静止出发，沿路面行驶，汽车的牵引力是6.0 103N，受到的阻力为车重的0.1 倍。求汽车运动的加速度和20 秒末的速度各是多大?(g=10m/s2)2如图所示，一位滑雪者在一段水平雪地上滑雪。已知滑雪者与其全部装备的总质量m=80kg，滑雪板与雪地之间的动摩擦因数0.05。从某时刻起滑雪者收起雪杖自由滑行，此时滑雪者的速度v=5m/s，之后做匀减速直线运动。求：(g=10m/s2)（1）滑雪者做匀减
3、速直线运动的加速度大小；（2）收起雪杖后继续滑行的最大距离。3如图，质量m=2kg的物体静止在水平面上，物体与水平面间的滑动摩擦因数25.0，现在对物体施加一个大小F=8N、与水平方向夹角=37角的斜下上的推力已知 sin37=0.6，cos37=0.8，取 g=10m/s2，求（1）物体运动的加速度（2）物体在拉力作用下5s 内通过的位移大小。文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A
4、8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10
5、A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I1
6、0A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I
7、10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6
8、I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F
9、6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1
10、F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D93 第二类：由物体的运动情况确定物体的受力情况1、列车在机车的牵引下沿平直铁轨匀加速行驶，在100s 内速度由5.0m/s 增加到 15.0m/s.（1）求列车的加速度大小（2）若列车的质量是1.0 106kg，机车对列车的牵引力是1.5 105N，求列车在运动中所受的阻力大小(g=10m/s2)2.一个滑雪的人，质量m
11、75kg，以 v02m/s 的初速度沿山坡匀加速滑下，山坡的倾角30，在t 5s 的时间内滑下的路程x60m，(g=10m/s2)求:（1）人沿斜面下滑的加速度（2）滑雪人受到的阻力（包括摩擦和空气阻力）(3)若忽略空气阻力，求人与斜面间的动摩擦因数方法归纳:自主练习:1.静止在水平地面上的物体，质量为 20kg，现在用一个大小为60N的水平力使物体做匀加速直线运动，当物体移动9.0m 时，速度达到6.0m/s，(g=10m/s2)求：（1）物体加速度的大小（2）物体和地面之间的动摩擦因数2.一位滑雪者如果以v030m/s 的初速度沿直线冲上一倾角为300的山坡，从冲坡开始计时，至4s 末，雪
12、橇速度变为零。如果雪橇与人的质量为m 80kg，(g=10m/s2)求滑雪人受到的阻力是多少。文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I1
13、0A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I
14、10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6
15、I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F
16、6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1
17、F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF
18、1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 Z
19、F1F6I10A8D94 F3、一辆质量为1.0 103kg 的小汽车正在以10m s 的速度行驶现在让它在12.5 m 的距离内匀减速地停下来，(g=10m/s2).求所需的阻力综合练习:1.一个滑雪人从静止开始沿山坡滑下，山坡的倾角=30，滑雪板与雪地的动摩擦因数是0.2，求 5 s 内滑下来的路程和5 s 末的速度大小.(g=10m/s2)2.质量 m 4kg 的物块，在一个平行于斜面向上的拉力F40N 作用下，从静止开始沿斜面向上运动，如图所示，已知斜面足够长，倾角37，物块与斜面间的动摩擦因数 0.2，力 F 作用了 5s，求物块在5s内的位移及它在5s 末的速度。（g 10m/s2
20、，sin37 0.6，cos37 0.8）3.如图，质量为 2kg 的物体，受到 20N的方向与水平方向成37角的拉力作用，由静止开始沿水平面做直线运动，物体与水平面间的动摩擦因数为0.4，当物体运动2s 后撤去外力F，则：（1）求 2s 末物体的速度大小？（2）撤去外力后，物体还能运动多远？（2/10smg）F 37文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7
21、M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R
22、7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10
23、R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK1
24、0R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK
25、10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:C
26、K10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:
27、CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D95 4.质量为 2kg 的物体置于水平地面上，用水平力F 使它从静止开始运动，第4s 末的速度达到24m/s，此时撤去拉力F，物体还能继续滑行72m.(g=10m/s2)求：（1）水平力F（2）水平面对物体的摩擦力5.如图所示，ABC是一雪道，AB段位长mL80倾角37的斜坡，BC段水平，AB与 BC平滑相连，一个质量kgm75的滑雪运动员，从斜坡顶
28、端以smv/0.20的初速度匀加速下滑，经时间st5.0到达斜面底端 B点，滑雪者与雪道间的动摩擦因数在AB段和 BC段都相同，(g=10m/s2)求：（1）运动员在斜坡上滑行时加速度的大小（2）滑雪板与雪道间的动摩擦因数（3）运动员滑上水平雪道后，在st0.2内滑行的距离x 6.如图所示，水平地面AB与倾角为的斜面平滑相连，一个质量为m的物块静止在A点。现用水平恒力F作用在物块上，使物块从静止开始做匀加速直线运动，经时间t 到达 B点，此时撤去力F，物块以在B点的速度大小冲上斜面。已知物块与水平地面和斜面间的动摩擦因数均为。求：（1）物块运动到B点的速度大小（2）物块在斜面上运动时加速度的大
29、小（3）物块在斜面上运动的最远距离x 文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G
30、1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7
31、G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL
32、7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 H
33、L7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10
34、HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10
35、 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D96 第三类:牛顿第二定律的应用传送
36、带问题1.水平传送带A、B以 v1m/s 的速度匀速运动，如图所示A、B相距 L=2.5m，将质量为m=0.1kg 的物体（可视为质点）从A点由静止释放，物体与传送带间的动摩擦因数0.1，（g10m/s2）求：（1）滑块加速时间（2）滑块加速阶段对地的位移和对传送带的位移（3）滑块从A到 B所用的时间2在民航机场和火车站可以看到用于对行李进行安全检查的水平传送带。当旅客把行李放到传送带上时，传送带对行李的滑动摩擦力使行李开始做匀加速运动。随后它们保持相对静止，行李随传送带一起前进。设传送带匀速前进的速度为0.25m/s，把质量为5kg 的木箱无初速地放到传送带上，由于滑动摩擦力的作用，木箱以6
37、m/s2的加速度前进，那么这个木箱被放在传送带上后，传送带上将留下一段多长的摩擦痕迹？方法归纳:自主练习:1.水平传送带A、B以 v 16m/s 的速度匀速运动，如图所示，A、B相距 16m，一物体（可视为质点）从A 点由静止释放，物体与传送带间的动摩擦因数0.2，则物体从A 沿传送带运动到 B所需的时间为多长？（g 10m/s2）文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码
38、:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编
39、码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档
40、编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文
41、档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9
42、文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D
43、9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8
44、D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D97 h V0 2.如图，光滑圆弧槽的末端与水平传送带相切，一滑块从圆槽滑下，以v06m/s 的速度滑上传送带，已知传送带长L8m，滑块与传送带之间的动摩擦因数为0.2，求下面三种情况下，滑块在传送带上运动的时间（g10m/s2）（1）传送带不动；（2）传送带以4m/s 的速度顺时针转动；（3）传送带以4m/s 的速度逆时针转动。3.如图
45、所示，绷紧的传送带与水平面的夹角=300，皮带在电动机的带动下，始终保持V0=2M/S的速率运行，现把一质量为M=10KG的工件（可看作质点）轻轻放在皮带的底端，经过一定时间，工件被传送到H=1.5M的高处，工件与传送带间的动摩擦因数23，取 G=10M/S2，求：工件在传送带上运动的时间为多少。文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7
46、G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL
47、7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 H
48、L7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10
49、HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10
50、 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F10 HL7G1A5R7O1 ZF1F6I10A8D9文档编码:CK10R7M5U6F1