大学物理力学测试题.pdf

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大学物理力学测试题.pdf

大学物理力学测试题一、选择题1下列力中不是保守力的是（）A 重力B 摩擦力C 万有引力D 静电力2对于一个物理系统来说，下列哪种情况下系统的机械能守恒（）A 合外力为 0 B 合外力不做功C 外力和非保守内力都不做功D 外力和保守内力都不做功3质量为 m 的小球以水平速度vr与竖直墙做弹性碰撞，以小球的初速的方向为 x 轴的正方向，则此过程中小球动量的增量为（）A mvirB 0irC 2mvirD 2mvir4以下四个物理量中是矢量的是哪一个（）A 动能B 转动惯量C 角动量D 变力作的功5在卫星沿椭圆轨道绕地球运动过程中，下述不正确的说法是（）A 动量守恒B 角动量守恒C 动量不守恒D 动能不守恒6.一运动质点的位置矢量为),(yxr，则它的速度的大小是（）（A）dtdr；（B）dtrd；（C）dtdydtdx；（D）22dtdydtdx。7.一质点的运动方程为bttbaatx1ln1，其中a、b 为常数，则此质点的速度表达式为（）（A）)1ln(bta；（B）)1ln(bta；（C）)1ln(btba；（D）)1ln(btba。8对于作用在有固定转轴的刚体上的力，以下说法不正确的是（）（A）当力平行于轴作用时，它对轴的力矩一定为零；（B）当力垂直于轴作用时，它对轴的力矩一定不为零；（C）如果是内力，则不会改变刚体的角动量；（D）如果是内力，则不会改变刚体的角加速度。9.均匀细杆 OM 能绕 O轴在竖直平面内自由转动，如图所示。今使细杆 OM 从水平位置开始摆下，在细杆摆动到竖直位置的过程中，其角速度、角加速度的变化是()（A）角速度增大，角加速度减小；（B）角速度增大，角加速度增大；（C）角速度减小，角加速度减小；（D）角速度减小，角加速度增大。10设人造地球卫星环绕地球中心作椭圆运动，则在运动过程中，卫星对地球中心的（）（A）角动量守恒，转动动能守恒；（B）角动量守恒，机械能守恒；（C）角动量不守恒，转动动能守恒；（D）角动量不守恒，机械能守恒；11.关于保守力，下面说法正确的是（）（A）保守力做正功时，系统内相应的势能增加；(B)质点运动经一闭合路径；保守力对质点做的功为零；（C）质点运动经一闭合路径；保守力对质点的冲量为零；(D)根据作用力与反作用力的关系，相互作用的一对保守力所做功的代数和必为零。12以下四种运动中，加速度保持不变的运动是（）A 单摆运动B 匀速率圆周运动C 卫星绕地球运动D 自由落体运动13几个力同时作用在某物体上，则下列正确的说法是（）A 物体一定保持静止B 物体一定发生运动C 物体一定产生加速度D 说不准14 下列四种运动中，物体的角动量不守恒的是（）A 匀速率圆周运动B 卫星绕地球的轨道运动C 刚体定轴匀速转动D 物体变速率圆周运动15下列说法不正确的是（）A 物体质量越大，惯性也越大B 刚体的转动惯量越大，转动惯性也越大C 同一物体速度越大动能也越大OM文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6D 物体受力越大，该力对物体做功越多16跳高运动员在跳高时总是落到海绵上，这样做是为了（）A减小运动员的动量变化B减小运动员所受的冲量C延长着地过程的作用时间D减小着地时运动员所受的平均冲力17.下列物理量中不是矢量的是:()A、位矢 B、位移 C、平均速度D、速率。18.下列各种情况种，哪种情况是不可能的:()A、一物体的速度为零，加速度不为零B、物体的加速度方向向西，与此同时加速度向东C、一物体在运动时具有恒定的速度和不恒定的加速度D、一物体的加速度和速度不使恒量19某质点的运动学方程为x=6+3t-5t3，则该质点做（）A、匀加速直线运动，加速度为正。B、匀加速直线运动，加速度为负。C、变加速直线运动，加速度为正。D、变加速直线运动，加速度为负。20质点做匀速率圆周运动，下列说法正确的是:（）A、切向加速度的大小和方向都在变化。B、法向加速度的大小和方向都在变化。C、切向加速度的大小不变，方向变化。D、法向加速度的大小不变，方向变化。21.一质点沿 X轴运动，其运动方程为2235ttx，式中时间 t 以 s 为单位，当 t=2s 时，该质点正在（）A、加速 B、减速 C、匀速 D、静止22.某人骑自行车以速率V向西行驶，今有风以相同速率从北偏东30方向吹来。试问人感到风从哪个方向吹来（）A、北偏东 30B、北偏西 30C、西偏南 30D、南偏东 3023.关于牛顿第二定律说法错误的是:（）A、反应了力和加速度的瞬时对应关系。B、质量是质点惯性大小的量度。C、力指的是质点所受的合外力。D、力的方向和加速度的方向无关。24.下面关于机械能守恒的说法中正确的是：A作匀速直线运动的物体机械能一定守恒；B 只要有重力对物体做功，物体的机械能一定守恒；文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 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ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6C 只有重力对物体做功，物体的机械能一定守恒；D物体在运动过程中除重力外还有其他力作用，则机械能一定不守恒。25几个力同时作用在某物体上，则下列正确的说法是（）A 物体一定保持静止B 物体一定发生运动C 物体一定产生加速度D 无法确定26.人造地球卫星，绕地球作椭圆轨道运动，地球在椭圆的一个焦点上，正确的说法是（）A动量不守恒，动能守恒 B 动量守恒，动能不守恒C对地心的角动量守恒，动能不守恒D对地心的角动量不守恒，动能守恒27下列说法不正确的是（）A 物体质量越大，惯性也越大B 刚体的转动惯量越大，转动惯性也越大C 同一物体速度越大动能也越大D 物体受力越大，该力对物体做功越多二、填空题1.某质点速率v与路程s的关系式为：21sv，则其切向加速度以s表示时的表达式是ta2.质量为 0.10kg 的质点，由静止开始沿曲线3523rt ijrrr运动，则在0t到2ts 时间内，作用在该质点上的合外力所作的功为。3.质点受到一个力28Ftijrrr(SI 制)作用，则经过时间t,该力产生的冲量为。4两木块的质量分别为1m、2m，由一轻质弹簧相连接，静止于光滑水平桌面上。现将两木块压紧弹簧（即弹簧被压缩），然后由静止释放，若在弹簧伸长到原长时，1m的速率为1v，则弹簧原来在压缩状态时，所具有的势能是5.如一均质铁棒的质量为M，和一铜棒焊在一起，铜棒的另一端有一转动轴，转轴垂直于棒，则铁棒的转动惯量为。文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S66半径为 R具有光滑轴的定滑轮边缘绕一细绳，绳的下端挂一质量为m的物体。绳的质量可以忽略，绳与定滑轮之间无相对滑动。若物体下落的加速度为a，则定滑轮对轴的转动惯量 J。7.一人沿着半径为r 的圆形轨道跑了一圈，其路程为，位移为。其平均速度的大小为，平均速率为。8.质点的运动学方程为r(t)=（9+4t-t2）i+（6t+t3）j，则当 t=2s 时，v=，加速度 a=。9某质点的运动学方程为tbytaxcos,sin,则该质点的轨迹方程为其速度为,加速度为。10.刚体定轴转动的角速度为，转动惯量为 J，则其角动量为，转动动能为。11重力是（保守力或非保守力），则它沿闭合路径所做的功（等于零或者不等于零）。12.某质点的质量为 m,速度为vr，则其动量为，动能为。13.系统的动量守恒条件是，刚体角动量守恒的条件是。三、判断题1、在匀变速圆周运动中，速度是个恒量。2、速度是描述质点位置变化大小及方向的物理量。3、位移的大小等于路程。4、平均速度的大小等于平均速率。5、物体做曲线运动时必定有加速度，加速度的法向分量必不为零。6、速度的大小等于速率。7、直线运动就是速度方向不变的运动。8、法向加速度是描述速度方向变化快慢的分加速度。9、在刚体定轴转动中受力矩越大，角加速度也越大。（）10物体的动量变化，动能却不一定变化。（）11质点系受到的合外力为零时，系统的总机械能守恒。（）12一质点速度为零时，其加速度一定为零。（）13平均速度的大小等于平均速率。（）14在刚体定轴转动中，受合外力矩为零则刚体的角动量不一定守恒。（）15当系统所受的合外力为零时，其动量和机械能都守恒。（）四、计算题1已知质点的运动方程为jti tr2sin52cos5，求：（1）质点的速度和加速度的矢量表达式；（2）质点的轨迹方程。2.已知质点沿 x 轴运动，运动方程为242xtt（SI），求：文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6（1）质点的速度和加速度。（2）1 秒末到 3 秒末过程中发生的位移。3一个实际弹簧，它的弹性力F 与变形x的关系为3FKxbx，式中411.2 10KN m，531.610bN m，求弹簧由10.1xm伸长到20.3xm时，弹性力所做的功。4.如右图所示，两物体质量分别为1m和2m，定滑轮的质量为 M,半径为r，可视作均匀圆盘。已知2m与桌面的滑动摩擦系数为k，求1m下落的加速度是多少？（10分）文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 ZX5V1V5B5S6文档编码:CW1A1U9F6B3 HF7B6Q5L4T6 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