5．如图所示用一根绕过定�轮的细绳把质量分别为m和m的两个物块p和q拴在一起若将物块q沿水平地面�右移动�许仍能保持平衡则关于力的变化 Sketch Coloring Page

5．如图所示用一根绕过定�轮的细绳把质量分别为m和m的两个物块p和q拴在一起若将物块q沿水平地面�右移动�许仍能保持平衡则关于力的变化 Template

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anonymous

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anonymous

anonymous
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tomski5．如图所示用一根绕过定�轮的细绳把质量分别为m和m的两个物块p和q拴在一起若将物块q沿水平地面�右移动�许仍能保持平衡则关于力的变化 coloring

5．如图所示用一根绕过定�轮的细绳把质量分别为m和M的两个物块P和Q拴在一起若将物块Q沿水平地面�右移动�许仍能保持平衡则关于力的变化 sketch template

如图所示用一根绳子绕过定�轮一端拴在钩码上手执另一端分别用力F1F2F3匀速拉起钩码．忽略绳子与�轮的�擦下列说法中正确的是 sketch template

如图所示用一根绳子绕过定�轮一端拴在钩码上手执另一端分别用力F1F2F3匀速拉起钩码．忽略绳子与�轮的�擦下列说法中正确的是 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对于同一高度的两个定�轮AB用一条足够长的绳子跨过它们并在两端分别挂有质量为m1和m2的物体m1≠m2 另在两�轮中间的 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

如图所示细绳绕过两个定�轮A和B在两端各挂 质量为m的物体在AB中点C处挂一质量为M的小球 A B轴心间距离为2L且m＜M＜2m sketch template

如图所示细绳绕过两个定�轮A和B在两端各挂 质量为m的物体在AB中点C处挂一质量为M的小球 A B轴心间距离为2L且m＜M＜2m sketch template

29．如图所示使一薄钢条下端固定现分别用不同的力去推它使其�生甲乙丙丁各图所示的形变如果F1=F3=F4&gtF2能说明力的作用 sketch template

百度教育 sketch template

日常生活中�们有时要用同样长的两根绳子挂一个物体如图1所示如果绳子的最大拉力为F物体受到的重力为G你能否用�量的知识分析绳子受到的 sketch template

如图所示小明分别用甲乙两�轮把同一桶沙子从一楼地面提到二楼地面用甲�轮所做的总功为W1机械效率为η1用乙�轮所做的总功为W2机械效率 sketch template

用如图所示甲乙两个�轮组分别提起相同的质量的物体．两个�轮组的动�轮的质量相同不计�擦则A．F甲> F乙η甲>η乙B．F甲 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

如图所示细绳绕过两个定�轮A和B在两端各挂 质量为m的物体在AB中点C处挂一质量为M的小球 A B轴心间距离为2L且m＜M＜2m sketch template

如图所示小明分别用甲乙两�轮把同一桶沙子从一楼地面提到二楼地面用甲�轮所做的总功为W1机械效率为η1用乙�轮所做的总功为W2机械效率 sketch template

如图所示用�轮组提起一个密度为25×103kg/m3体积为004m3的石块作用在绳子自由端的拉力F为400N石块在20s内匀速上升 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

如图所示用一根硬棒撬起一个石块棒的上端A是动力的作用点若用最小的力撬动石块请标出此时杠杆的支点O并画出最小动力F及动力臂L．题目和 sketch template

力的三角形法则的应用知乎 sketch template

如图所示四个�轮组如果�轮的重力和一切�擦及丙组的板重不计重物G的重力为600N．要将重物匀速提起四种情况下拉力F分别为F甲= F乙 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

20．如图所示用一根长为L质量不计的细杆与一个上弧长为下弧长为的�属线框的中点联结并悬挂于O点悬点正下方存在一个上弧长为2下弧长为2的 sketch template

百度教育 sketch template

20．如图所示用一根长为L质量不计的细杆与一个上弧长为下弧长为的�属线框的中点联结并悬挂于O点悬点正下方存在一个上弧长为2下弧长为2的 sketch template

如图所示用与水平面成30°角的力斜�右拉小车拉力为200 N要求画出带有标度能够精确表示此力的示意图．题目和参考答案——青夏教育 sketch template

如图所示用两个�轮分别匀速提升AB两个物体拉细绳的力F大小相等在相同时间内物体上升的距离也相等绳重及�擦不计�轮的质量小于物体的 sketch template

15．如图6所示绳子AB能承受的最大拉力为100N用它悬挂一个重50N的物体现在其中点O施加一个水平拉力F缓慢�右拉动当绳子断裂时AO 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

8．如图4所示某人站在A处用一根绳子和两个�轮提起物体B画出最省力的绕线——青夏教育精英家教�—— sketch template

一轮复习：阿特伍德机类型知乎 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

如图所示用一电动机通过�轮组提升重物．假设电动机的电源电压恒为220V线圈电阻为10Ω不考�电动机各处�檫．当电动机将400kg重物匀速 sketch template

如图所示小宇同学用一个距离手3m高的定�轮拉住100N的物体他手拉绳子从�轮正下方沿水平方�移动4m如图所示若不计绳重和�擦他至�做 sketch template

如图所示用两个完全相同的�轮匀速提升质量相等的物体．且物体质量大于�轮质量不计绳重和�擦．比较甲乙两种方式可知更省力机械效率更高 sketch template

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