在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).问那一对是平衡力?哪一对相互作用力?(1)、A对B的拉力和B对C的拉力.(2)、B对A的拉力和A对B的拉力.(3)、A对B的拉力

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在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).问那一对是平衡力?哪一对相互作用力?(1)、A对B的拉力和B对C的拉力.(2)、B对A的拉力和A对B的拉力.(3)、A对B的拉力

在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).问那一对是平衡力?哪一对相互作用力?(1)、A对B的拉力和B对C的拉力.(2)、B对A的拉力和A对B的拉力.(3)、A对B的拉力
在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).
问那一对是平衡力?哪一对相互作用力?
(1)、A对B的拉力和B对C的拉力.
(2)、B对A的拉力和A对B的拉力.
(3)、A对B的拉力和C对B的拉力.
(4)、B对C的拉力和C对B的拉力.

在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).问那一对是平衡力?哪一对相互作用力?(1)、A对B的拉力和B对C的拉力.(2)、B对A的拉力和A对B的拉力.(3)、A对B的拉力
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在光滑的地面上放着用绳子连接的物体A、B和C,力F作用在C上(如图2).问那一对是平衡力?哪一对相互作用力?(1)、A对B的拉力和B对C的拉力.(2)、B对A的拉力和A对B的拉力.(3)、A对B的拉力 置于水平地面上质量分别为M和N的物体A和B用绳连接,在B上施加横力F,使两 物体匀加速运动.求绳拉力?地面不光滑 质量均为m的物体A,B置于光滑水平地面上,A以速度v0撞向静止在地面上的B,B的左端固 11、如图所示,在高为H的光滑平台上有一物体用绳子跨过定滑轮C由地面上的人以均匀速度V0向右拉动,不计人的高度,当人从地面上平台的边缘A处向右行走距离S到达B处时,求:①物体的速度V为 两个物体A B 叠放着放在光滑的地面上,A在B上,两物体接触面粗糙,力F作用于B上,问;两个物体A B 叠放着放在光滑的地面上,A在B上,两物体接触面粗糙,力F作用于B上,问:是否能证明A的速度最大值 质量都是1 kg的物体A、B,中间用一轻弹簧连接,放在光滑的水平地面上.现使B物体靠在墙上,用力推物体A压缩弹簧,如图所示.这个过程中外力做功为8 J,待系统静止后突然撤去外力.从撤去外力到弹 冲量计算题质量都是1KG的物体A、B间用一轻弹簧连接,放在光滑的水平地面上,现使B物体靠在墙上,用力推物体A压缩弹簧,这个过程中外力做功8J,待系统静止后突然撤去外力到弹簧第一次恢复到 长为5m的细绳的两端分别系于竖立于地面上相距4m 的两杆顶端A,B绳子上挂一个光滑的轻质滑轮,连着为2kg的物体,求绳中张力 两物体A B 叠放在光滑的水平地面上两物体A B 叠放在光滑的水平地面上(A下B上),m1=8kg,m2=2kg,AB间的动摩擦因数u=0.2.将F=15N的水平外力作用在物体A上使之开始运动时,求AB间的摩擦力. B的重力给绳子一个向下的力,为A的向心力,为什么B又收到一个向上的力?在光滑水平转台上开有一小孔O,一根轻绳穿过小孔,一端栓一质量为1kg的物体A,另一端连接质量为1kg的物体B,已知O与A物间 通过绳子与物体B相连,假设绳子的质量以及 A 在光滑的水平桌面上有一个物体A,通过绳子与物体B相连,假设绳子的质量以及绳子与定滑轮之间的摩擦力都可以忽略不计,绳子不可伸长,如果mB=3mA, 如图所示,一个小物体A放在斜面B上,B放在光滑的水平地面上如图所示(这种图太通俗了),一个小物体A放在斜面B上,B放在光滑的水平地面上,现用水平恒力F推B使A与B相对静止一起通过一段路程 如图所示,质量分别为2m和m的两物体A、B叠放在一起,放在光滑的水平地面上,已知A、B间的?如图所示,质量分别为m和2m的两物体A、B叠放在一起,放在光滑的水平地面上,已知A、B间的最大摩擦力为A 如图所示,一倾角为α的斜面体置于固定在光滑水平地面上的物体A,B之间,斜面体恰好如图所示,一倾角为α的斜面体置于固定在光滑水平地面上的物体A、B之间,斜面体恰好与物体A、B接触.一质 如图一质量为M的斜面,倾角为θ,放置在光滑的水平面上,斜面上有A,B两个物体,质量分别为m1,m2,与斜面摩擦因数分别为u1,u2,且u1》u2》tanθ,中间用一根绳子连接,绳子处于伸直状态,现AB静止在斜面 质量分别为mA,mB的两物体A,B放在光滑的水平地面上,A物体受到力F的作用使A,B一起做加速运动,则A,B两物体间的作用力是多少?(图为 A、B两物体靠在一起,放在光滑的水平面上,受到一个向右的力F 如图所示,轻质弹簧连接A、B两物体,A放在水平地面上,B的上端通过细线挂在天花板上 如图所示,轻质弹簧连接A、B两物体,A放在水平地面上,B的上端通过细线挂在天花板上