如图所示，用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中，三个带电小球质量相等，a球带负电，平衡时三根绝缘细线都是直的，但拉力都为零 Sketch Coloring Page

如图所示，用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中，三个带电小球质量相等，a球带负电，平衡时三根绝缘细线都是直的，但拉力都为零 Template

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tomski如图所示，用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中，三个带电小球质量相等，a球带负电，平衡时三根绝缘细线都是直的，但拉力都为零 coloring

如图所示，用三根轻绳将质量为m的物块悬挂在空中。已知ac和bc与竖直方�的夹角分别为30°和60°，重力加速度为g。请选择合适的研究对象，画出 sketch template

如图所示用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中三个带电小球质量相等A球带正电平衡时三根绝缘细线都是直的但拉力都为零则 sketch template

如图甲所示，用刻度尺测量一物体的长度，物体的长度为cm；如图乙所示，图中是分度值为01s的机械秒表，其示数是s。 sketch template

如图所示用三根竖直的长度相同且不可伸长的细轻绳将一个细圆环水平悬挂环上拴绳点彼此距离相等．现借助一些重量不计的辐条将一与环等质量的重物 sketch template

如图所示用粗细均匀的电阻丝折成平面梯形框架abcd边均与ad边成60°角ab=bc=cd=L长度为L的电阻丝电阻为r框架与一电动势 sketch template

如图所示用三根相同的轻弹簧abc和重力为G的同一小球相连接后固定在水平地面和天花板之间静止时观察到ab与天花板的夹角都是30°而 sketch template

如图所示，用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中，三个带电小球质量相等，A球带负电，平衡时三根绝缘细线都是直的，但拉力都为零 sketch template

如图所示用两根细线把AB两小球悬挂在天花板上的同一点O并用第三根细线连接AB两小球然后用力F作用在小球A上使三根细线均处于直线状态 sketch template

题目用三根细线abc将两个小球1和2连接并悬挂如下图所示两球均处于静止状态细线a与竖直方�的夹角为30细线c水平求1若 sketch template

如图所示用三根细线将质量均为m的AB两小球以及水平天花板上的固定点O之间两两连接然后用一水平方�的力F作用于A球上此时三根细线处于直线 sketch template

乐学堂上课 sketch template

如图所示用两根细线把AB两个小球悬挂在天花板上的同一点O并用第三根细线连接AB两个小球然后用某个力F作用在小球A上使三根细线均处于 sketch template

题目如图所示ABC三个小球的质量分别为m2m3mB小球带负电电荷量为qAC两小球不带电不考�小球间的静电感应不可 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

如图所示三个小球分别用三根绝缘细线悬挂在同一点细线的长度关系让三球带电后它们静止在图中所示位置此时细线沿竖直方�连线恰构成一 sketch template

如图所示在绝缘的水平面上等间距固定着三根相互平行的通电直导线ab和c各导线中的电流大小相同．其中ac导线中的电流方�垂直纸面�外b sketch template

用四个�轮和两根相同的绳子组成如图所示的甲、乙两个�轮组用它们匀速提起货物在绳自由端施加竖直的拉力分别为F甲和F乙物重分别为G甲和G乙 sketch template

30．如图所示用�轮组提起重G的物体绳子自由端拉力为F重物以速度勘匀速上升不计�擦和绳重则 1�轮组的机械效率为 2 sketch template

如图所示AB两长方体叠放在一起放在水平桌面上A的密度为ρA底面积为SAB的密度为ρB底面积为SB若A对B的压强与B对桌面的压强 sketch template

如图所示用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中．三个带电小球质量相等A球带正电平衡时三根绝缘细线都是直的但拉力都为零 sketch template

如图所示完全相同的质量为m的AB两球用两根等长的细线悬挂在O点两球之间夹着一根劲度系数为k的轻弹簧静止不动时弹簧处于水平方�两根 sketch template

百度教育 sketch template

10．用相同的定�轮和动�轮组成甲乙两个�轮组如图8所示用它们来提升同一重物甲�轮组将重物举高1m乙�轮组将重物举高2m在不计绳 sketch template

如图所示，取两个相同的验电器A和B，使A带负电，B不带电，用带有绝缘手柄的�属棒把A和B连接起来．下列说法正确的是 A B中正电荷通过 sketch template

百度教育 sketch template

如图所示用三条细线悬挂的�属圆环�属环粗细均匀单位长度的质量为25g三条细线�对称分布稳定时�属环面水平在�属环正下方放有一个 sketch template

如图所示磁铁吸住两根铁钉的一端那么这两根铁钉的另一端将 A．互相吸引如图甲B．互相排斥如图乙C．既不吸引也不排斥如图丙D．以上 sketch template

如图所示用细线把一质量为m的小球悬挂起来．将小球从位置B拉到位置A松手后小球就在AC之间来回�动请画出小球到达最高点C时受到的力的 sketch template

百度教育 sketch template

如图所示的电路中，电源电压保持不变。闭合开关S后，�片P从b端移动到a端的过程，电压表示数U与电流表示数I的关系图像如图所示。下列说法正确的是（ sketch template

24．如图7所示物体挂在弹簧测力计下用力的示意图表示出物体所受拉力的三要素——青夏教育精英家教�—— sketch template

百度教育 sketch template

用三根细线、、将两个小球和连接，并如图所示悬挂。两高途 sketch template

如图所示用三根长度相同的绝缘细线将三个带电小球连接后悬挂在空中．三个带电小球质量相等A球带正电平衡时三根绝缘细线都是直的但拉力都为零 sketch template

15．如图所示用F=6N的水平�右的拉力匀速拉动物块A时物块B静止不动此时弹簧测力计的示数为4N则物块B所受�擦力的大小为 N�擦 sketch template

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