高中物理必修二曲线运动练习题文档格式.docx

1、A,速度大的时间长 B,速度小的时间长 C,一样长 D,质量大的时间长 3,关于运动的合成和分解,下列说法正确的是， A,合运动的时间等于两个分运动的时间之和 B,匀变速运动的轨迹可以是直线,也可以是曲线 C,曲线运动的加速度方向可能不速度在同一直线上 D,分运动是直线运动,则合运动必是直线运动 5,甲、乙两物体都做匀速圆周运动,其质量之比为1?2,转动半径之比为1?2,在相等时间里甲转过60?,乙转过45?,则它们所受外力的合力之比为， A,1?4 B,2?3 C,4?9 D,9?16 should be dealt with by the personnel Department of t

2、he company. （3） personal injury accident occurs, the direct punishment 500-1000, who is directly responsible for the accident responsibility, give notice of criticism and 50-100 economic sanctions against them. （4） to conceal the accident, reported without undue delay or false, to inform the adminis

3、trative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. （5） significant near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. E

4、ight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and quality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 i

5、ndustrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pre

6、ssure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation6,如图所示,在不计滑轮摩擦和绳子质量的条件下,当小车匀速向右运动时,物体A的受力情况是， v A,绳的拉力大于A的重力 A B,绳

7、的拉力等于A的重力 （第10题） C,绳的拉力小于A的重力 D,绳的拉力先大于A的重力,后变为小于重力 7,如图所示,有一质量为M的大圆环,半径为R,被一轻杆固定后悬挂在O点,有两个质量为m的小环，可视为质点，,同时从大环两侧的对称位置由静止滑下。两,则此时大环对轻杆的拉力大小为， 小环同时滑到大环底部时,速度都为vA,，2m+2M，g （第11题） 2B,Mg,2mv/R 2C,2m（g+v/R）+Mg 2D,2m（v/R,g）+Mg 8,下列各种运动中,属于匀变速运动的有， A,匀速直线运动 B,匀速圆周运动 C,平抛运动 D,竖直上抛运动 9,水滴自高处由静止开始下落,至落地前的过程中遇

8、到水平方向吹来的风,则， A,风速越大,水滴下落的时间越长 B,风速越大,水滴落地时的瞬时速度越大 C,水滴着地时的瞬时速度不风速无关 D,水滴下落的时间不风速无关 10,在宽度为d的河中,水流速度为v,船在静水中速度为v，且v,v，,方向可以选择,现让该2112船开始渡河,则该船， dA,可能的最短渡河时间为 v22000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation-2005 pressure vessel wel

9、ding procedures of steel pressure vessel NDT 9 JB/T4744-2000 8 JB4730-fication for steel pressure vessels 7 JB/47092000 of welding procedure quali-2004 petrochemical JB/ T4708-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-engine

10、ering code for construction and acceptance of field equipment 4 HGJ222 2002 industrial pipe welding-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-Ray lighting and quality rating of 2 GB11345-2005 steel fusion welded butt joints, welding engineering-on

11、s, serial number a 1 GB3323icatin team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specif1000 punishment. （5） significant near miss should be attempted as the case of responsible for the accident and constructio-strative leadership

12、of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500100 economic sanctions against them. （4） to conceal the accident, reported without undue delay or false, to inform the admini-criticism and 501000, who is directly responsible for the accident responsibilit

13、y, give notice of -00should be dealt with by the personnel Department of the company. （3） personal injury accident occurs, the direct punishment 5 2 B,可能的最短渡河位移为d C,只有当船头垂直河岸渡河时,渡河时间才和水速无关 D,不管船头不河岸夹角是多少,渡河时间和水速均无关 11,关于匀速圆周运动的向心力,下列说法正确的是， A,向心力是指向圆心方向的合力,是根据力的作用效果命名的 B,向心力可以是多个力的合力,也可以是其中一个力或一个力的分

14、力 C,对稳定的圆周运动,向心力是一个恒力 D,向心力的效果是改变质点的线速度大小 二、实验和填空题 12,一物体在水平面内沿半径R=20cm的圆形轨道做匀速圆周运动,线速度v=0.2m/s,那么,它的向2心加速度为_m/s,它的周期为_s。 13,在一段半径为R=15m的圆孤形水平弯道上,已知弯道路面对汽车轮胎的最大静摩擦力等于车重的=0.70倍,则汽车拐弯时的最大速度是_m/s。14,如图所示,将质量为m的小球从倾角为的光滑斜面上A点以速度v水平抛出，即v?CD，,小球运动到B点,已知A点的高度h,00 则小球到达B点时的速度大小为_。15,一个有一定厚度的圆盘,可以绕通过中心垂直于盘面的

15、水平轴转动,用下面的方法测量它匀速转动时的角速度。实验器材:电磁打点计时器,米尺,纸带,复写纸片。实验步骤:，1，如图所示,将电磁打点计时器固定在桌面上,将纸带的一端穿过打点计时器的限位孔后,固定在待测圆盘的侧面上,使得圆转动时,纸带可以卷在圆盘侧面上。，2，启动控制装置使圆盘转动,同时接通电源,打点计时器开始打点。第 3 页 共 6 页 ，3，经过一段时,停止转动和打点,取下纸带,进行测量。a.由已知量和测得量表示的角速度的表达式为=_,式中各量的意义是_。-2b.某次实验测得圆盘半径r=5.5010m,得到纸带一段如下图所示。求得角速度为_。16,，1，在“研究平抛物体运动”的实验中,可以

16、描绘平抛物体运动轨迹和求物体的平抛初速度。实验简要步骤如下:A,让小球多次从位置上滚下,记下小球穿过卡片孔的一系列位置;B,安装好器材,注意斜槽末端水平和平板竖直,记下斜槽末端O点和过O点的竖直线,检测斜槽末端水平的方法是。C,测出曲线上某点的坐标x、y,用v=算出该小球的平抛初速度,实验需要对多个点求v的值,然00后求它们的平均值。D,取下白纸,以O为原点,以竖直线为轴建立坐标系,用平滑曲线画平抛轨迹。上述实验步骤的合理顺序是_，只排列序号即可，。，2，如图所示,在“研究平抛物体运动”的实验中,用一张印有小方格的纸记录轨迹,小方格的边长l=1.25cm。若小球在平抛运动途中的几个位置如图中的

17、a、b、c、d所示,则小球平抛的初速度的计算式为v= ，用l、g表示，,其值是 ，取og=9.8m/s2，,小球在b点的速率是 。三、计算题 17水平抛出的一个石子,经过0.4s落到地面,落地时的速度方向跟水平方向的夹角是53?,，g取210m/s，。试求:，1，石子的抛出点距地面的高度;，2，石子抛出的水平初速度。2000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation-2005 pressure vessel wel

18、ding procedures of steel pressure vessel NDT 9 JB/T4744-2000 8 JB4730-fication for steel pressure vessels 7 JB/47092000 of welding procedure quali-2004 petrochemical JB/ T4708-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-engine

19、ering code for construction and acceptance of field equipment 4 HGJ222 2002 industrial pipe welding-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-Ray lighting and quality rating of 2 GB11345-2005 steel fusion welded butt joints, welding engineering-on

20、s, serial number a 1 GB3323icatin team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specif1000 punishment. （5） significant near miss should be attempted as the case of responsible for the accident and constructio-strative leadership

21、of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500100 economic sanctions against them. （4） to conceal the accident, reported without undue delay or false, to inform the admini-criticism and 501000, who is directly responsible for the accident responsibilit

22、y, give notice of -00should be dealt with by the personnel Department of the company. （3） personal injury accident occurs, the direct punishment 5 4 18在如图所示的圆锥摆中,已知绳子长度为L,绳子转动过程中不竖直方向的夹角为,试求小球做圆周运动的周期。19.如图所示,质量m,1kg的小球用细线拴住,线长l,0.5m,细线所受拉力达到F,18N时就会被拉断。当小球从图示位置释放后摆到悬点的正下方时,细2线恰好被拉断。若此时小球距水平地面的高度h,5

23、m,重力加速度g,10m/s,求小球落地处到地面上,点的距离？，P点在悬点的正下方， 20、如图所示,半径R=0.4m的光滑半圆轨道不粗糙的水平面相切于A点,质量为m=1kg的小物体，可视为质点，在水平拉力F的作用下,从C点运动到A点,物体从A点进入半圆轨道的同时撤去外力F,物体沿半圆轨道通过最高点B后作平抛运动,正好落在C点,已知AC=2m,F=15N,g取10m/s2,试求:，1，物体在B点时的速度以及此时半圆轨道对物体的弹力, ，2，物体从C到A的过程中,摩擦力做的功, 答案 should be dealt with by the personnel Department of the

24、company. （3） personal injury accident occurs, the direct punishment 500-1000, who is directly responsible for the accident responsibility, give notice of criticism and 50-100 economic sanctions against them. （4） to conceal the accident, reported without undue delay or false, to inform the administra

25、tive leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. （5） significant near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eigh

26、t, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and quality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical