大学物理上部分试题及答案..pdf

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1、优秀学习资料欢迎下载第一章 质点运动学一、填空题1.一质点作半径为R 的匀速圆周运动，在此过程中质点的切向加速度的方向改变，法向加速度的大小不变。（填“改变”或“不变”）2.一质点作半径为 0.1 m 的圆周运动，其角位移随时间t的变化规律是=2+4t2 (SI)。在t=2 s 时，它的法向加速度大小an=_25.6_m/s2；切向加速度大小at=_0.8_ m/s2。3.一质点在 OXY平面内运动,其运动方程为22,192xt yt,则质点在任意时刻的速度表达式为j ti42；加速度表达式为ja4。4、沿半径为R的圆周运动，运动学方程为212t (SI)，则时刻质点的法向加速度大小为an=（

2、16 R t2）；角加速度=（4 rad/s2）（1 分）5.一质点作半径为 0.1 m 的圆周运动，其角位置的运动学方程为：2214t，则其切向加速度大小为ta=_0.1_2m s,第 1 秒末法向加速度的大小为na=_0.1_2m s.6一小球沿斜面向上作直线运动，其运动方程为：245tts，则小球运动到最高点的时刻是t=_2_s.7、一质点在 OXY 平面内运动,其运动方程为22,192xt yt,则质点在任意时刻的速度表达式为（j ti42）；加速度表达式为（ja4）。8.一质点沿半径R=0.4 m 作圆周运动，其角位置=2+3t2，在 t=2s 时，它的法向加速度na=(57.6 )

3、2/sm，切向加速度ta=(2.4 )2/sm。9、已知质点的运动方程为jti tr)2(22，式中 r 的单位为m，t的单位为s。则质点的运动轨迹方程y（2412x），由0t到st2内质点的位移矢量r（ji44）m。10、质点在OXY平面内运动，其运动方程为210,2tytx，质点在任意时刻的位置矢量为（jti t)10(22）；质点在任意时刻的速度矢量为（j ti22）；加速度矢量为（j2）。-第 1 页，共 26 页精品p d f 资料 可编辑资料-优秀学习资料欢迎下载二、选择题1.某质点作直线运动的运动学方程为x5t-2t3+8，则该质点作（D ）。(A)匀加速直线运动，加速度沿x轴正

4、方向(B)匀加速直线运动，加速度沿x轴负方向(C)变加速直线运动，加速度沿x轴正方向(D)变加速直线运动，加速度沿x轴负方向2.一质点在平面上运动，已知质点位置矢量的表示式为jbtiatr22（其中a、b为常量）,则该质点作(C )。(A)匀速直线运动；(B)抛物线运动；(C)变速直线运动；(D)一般曲线运动。3、某质点作直线运动的运动学方程为6533ttx(SI)，则该质点作（D ）。（A）匀加速直线运动，加速度沿x 轴正方向（B）匀加速直线运动，加速度沿x 轴负方向（C）变加速直线运动，加速度沿x 轴正方向（D）变加速直线运动，加速度沿x 轴负方向4、一质点在x 轴上运动，其坐标与时间的变

5、化关系为x=4t-2t2，式中 x、t 分别以 m、s 为单位，则 4 秒末质点的速度和加速度为(B )（A）12m/s、4m/s2；（B）-12 m/s、-4 m/s2；（C）20 m/s、4 m/s2；（D）-20 m/s、-4 m/s2；5在一直线上相向运动的两个小球作完全弹性碰撞，碰撞后两球均静止，则碰撞前两球应满足：-第 2 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W

6、4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7

7、X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G

8、9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K

9、9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1

10、I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX

11、3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG

12、7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4优秀学习资料欢迎下载（D ）。（A）质量相等；(B)速率相等；(C)动能相等；(D)动量大小相等，方向相反。6.以下四种运动形式中，加速度保持不变的运动是（A ）。A抛体运动；B匀速圆周运动；C变加速直线运动；D 单摆的运动.。7、一质点沿 x 轴运动的规律是mttx3352。则第三秒时的加速度的大小是（A ）2/sm。A 10 B50；C15；D12。8、质点做半径为1m的圆周运动，运动方程为=3+2t2（SI单位），则t时刻质点的切向加速度的大小为ta=（C ）m/s

13、2。A 1 B3；C4；D8。9、质点沿半径R做圆周运动，运动方程为232tt(SI单位)，则任意时刻质点角速度的大小=（B）。A31t B62t；C42t；D62t。10、质点在OXY平面内运动,其运动方程为210,tytx,质点在任意时刻的加速度为（B）。Aj Bj2；C3j；D4j。三、一质点沿半径为R的圆周按规律2021bttvs运动，bv,0都是常量。-第 3 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:C

14、X3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 H

15、G7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH

16、2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码

17、:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10

18、 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7

19、ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档

20、编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4优秀学习资料欢迎下载（1）求t时刻质点加速度的大小；（2）t为何值时总加速度在数值上等于b？（3）当加速度达到b时，质点已沿圆周运行了多少圈？（1）由2021bttvs可知btvv0RbtvRvat202bdtdvanRbtvbRaaatn402222（2）bRbtvbRaaatn402222即00btvbvt0（3）bvt0带入2021bttvsbvbttvs2212020bRvn420四、质点 P 在水平面内沿一半径为1m 的圆轨道

21、转动，转动的角速度与时间t的关系为2kt，已知t=2s 时，质点 P的速率为 16m/s，试求 t=1s 时，质点 P 的速率与加速度的大小。解：由线速度公式221ktRktR得421622tkP点的速率为24t m/s ttat8dd m/s24222161)4(ttRan m/s2t=1 时：)/(414422smt)/(882smtat)/(1611616244smtan)/(9.175881622222smaaant五、已知质点的运动学方程为：2283126810rttittj.式中r的单位为米，t的单位为秒，求作用于质点的合力的大小。解：163(128)drvtitjdt1612dv

22、aijdt六、一质点沿x方向运动，其加速度随时间的变化关系为a=3+2 t(SI),如果初始时质点的速度v0为 5m/s，则当为 3s 时，质点的速率v为多大。-第 4 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C

23、3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6

24、H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M

25、2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W

26、4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7

27、X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G

28、9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4优秀学习资料欢迎下载解：2()3+2 3 +

29、va t dtt dtttC0t时，05v可得积分常量5Cm/s 速度为23+5vt t当3t时，233+523vt t m/s 七、一质点在OXY平面内运动,其运动方程为22,10 xt yt,求（1）质点运动的轨迹方程；（2）质点在任意时刻的速度和加速度矢量。（1）4102xy（2）j ti22，ja2八、已知一质点的运动方程为22rat ibt j（a、b 为常数，且不为零），求此质点运动速度的矢量表达式、加速度的矢量表达式和轨迹方程。22drvatibtjdt22dvaaibjdt2xat2ybt则将2xta代入y的表达式可得到质点运动的轨迹方程为byxa九、已知质量为3kg的质点的运

30、动学方程为：22321468rttittj.式中r的单位为米，t的单位为秒，求任意时刻的速度矢量和加速度矢量表达式。解：62(86)drvtitjdt68dvaijdt（2）2226810m saa3 1030NFma-第 5 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X

31、6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9

32、M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9

33、W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I

34、7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3

35、G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7

36、K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M

37、1I7X6H4优秀学习资料欢迎下载十、一质点在OXY平面内运动,其运动方程为24,82xt yt,求（1）质点运动的轨迹方程；（2）质点在任意时刻的速度和加速度矢量。（1）288xy（2）44itj，4aj十一、已知质量为10kg的质点的运动学方程为：2283126810rttittj.式中r的单位为米，t的单位为秒，求作用于质点的合力的大小。解：163(128)drvtitjdt1612dvaijdt222121620m saa10 20200NFma十二、有一质点沿 x 轴作直线运动，t 时刻的坐标为 x=5t2-3t3(SI).试求（1）在第 2 秒内的平均速度；（2）第 2 秒末的瞬时

38、速度；（3）第 2 秒末的加速度.第四章刚体的转动一、填空题1.刚体绕定轴转动时，刚体的角加速度与它所受的合外力矩成_ 正比 _，与刚体本身的转动惯量成反比。（填“正比”或“反比”）2.花样滑冰运动员绕通过自身的竖直轴转动，开始时两臂伸开，转动惯量为0J，角速度为0；然后将两手臂合拢，使其转动惯量变为023J，则转动角速度变为032.(1)/6m/sxtv2(2)d d109,x/tttvt 216 m/sv1018,t(3)d/datv2t226 m/sa-第 6 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6

39、H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M

40、2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W

41、4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7

42、X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G

43、9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K

44、9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1

45、I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4优秀学习资料欢迎下载3某人站在匀速旋转的圆台中央，两手各握一个哑铃，双臂向两侧平伸与平台一起旋转。当他把哑铃收到胸前时，人、哑铃和平台组成的系统转动角速度应变大；转动惯量变小。4、均匀细棒质量为m，长度为l，则对于通过棒的一端与棒垂直的轴的转动惯量为（32ml），对于通过棒的中点与棒垂直的轴的转动惯量（122ml）。5、长为L的匀质细杆，可

46、绕过其端点的水平轴在竖直平面内自由转动。如果将细杆置与水平位置，然后让其由静止开始自由下摆，则开始转动的瞬间，细杆的角加速度为（Lg23），细杆转动到竖直位置时角加速度为（零）。6.一长为1ml的均匀直棒可绕过其一端且与棒垂直的水平光滑固定轴转动。抬起另一端使棒向上与水平面呈60 ，然后无初转速地将棒释放，已知棒对轴的转动惯量为213ml，则(1)放手时棒的角加速度为（7.5）2/srad；(2)棒转到水平位置时的角加速度为（15）2/srad。（210m/sg）7、一圆盘正绕垂直于盘面的水平光滑固定轴O 转动，如图射来两个质量相同，速度大小相同，方向相反并在一条直线上的子弹，子弹射入圆盘并留

47、在盘内，则子弹射入后的瞬间，圆盘的角速度（减小）。8 一根长为l，质量为m的均匀细棒在地上竖立着。如果让竖立着的棒以下端与地面接触处为轴倒下，则上端到达地面时细棒的角加速度应为（lg23）。9、某人站在匀速旋转的圆台中央，两手各握一个哑铃，双臂向两侧平伸与平台一起旋转。当他把哑铃收到胸前时，人、哑铃和平台组成的系统转动的角速度(变大 )10、如图所示，一静止的均匀细棒，长为L、质量为M，可绕通过棒的端点且垂直于棒长的光滑固定轴O在水平面内转动，转动惯量为32ML。一质量为m、速率为v的子弹在水平面内沿与棒垂直的方向射出并穿出棒的自由端，设穿过棒后子弹的速率为2v，则此时棒的角速度应为（MLm2

48、v3）。二、选择题1、长为L的匀质细杆，可绕过其端点的水平轴在竖直平面内自由转动。O v21v俯视图-第 7 页，共 26 页精品p d f 资料 可编辑资料-文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P

49、10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V

50、7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4文档编码:CX3G9M2J2P10 HG7K9W4C3V7 ZH2M1I7X6H4