如图所示某人通过定�轮拉住一个重力等于g的物体使物体缓慢上升这时人从a点走到b点前进的距离为s绳子的方�由竖直方�变为与水平方�成θ角 Sketch Coloring Page

如图所示某人通过定�轮拉住一个重力等于g的物体使物体缓慢上升这时人从a点走到b点前进的距离为s绳子的方�由竖直方�变为与水平方�成θ角 Template

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sketch #2977 Spongebob Germaine Hoens

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tomski如图所示某人通过定�轮拉住一个重力等于g的物体使物体缓慢上升这时人从a点走到b点前进的距离为s绳子的方�由竖直方�变为与水平方�成θ角 coloring

如图所示某人通过定�轮拉住一个重力等于G的物体使物体缓慢上升这时人从A点走到B点前进的距离为s绳子的方�由竖直方�变为与水平方�成θ角 sketch template

百度教育 sketch template

如图所示小华通过定�轮用力F’拉弹簧测力计另一端通过细绳拉长方体木块A木块A下面是一长木板B长木板B放在光�水平面上实验时拉着B沿 sketch template

如图所示某人正通过定�轮用不可伸长的轻质细绳将质量为m的货物提升到高处．已知人拉绳的端点沿平面�右运动若�轮的质量和�擦均不计则下列说法 sketch template

如图4所示跨过定�轮的绳子一端固定在箱子上另一端由站在箱子上的人拉住已知箱子的质量为40kg人的质量为60kg当人以550N的力拉 sketch template

如图所示某人用绳通过定�轮拉小船设人匀速拉绳的速度为v0绳某时刻与水平方�夹角为α下列说法正确的是．A．小船将做加速直线运动B．小船将 sketch template

如图所示轻杆BC的C点用光�铰链与墙壁固定杆的B点通过水平细绳AB使杆与竖直墙壁保持30°的夹角．若在B点悬挂一个定�轮某人用它匀速地 sketch template

如图所示重5N的物体B通过定�轮沿水平方�拉着重50N的物体A�右做匀速直线运动．则物体A受到的�擦力的大小为55N．如果对A物体施加一个 sketch template

如图所示某人用恒力F通过�轮把放在水平面上的物体�右拉动了L力的方�始终与水平方�成θ角求拉力F对物体做的功．题目和参考答案——青夏 sketch template

百度教育 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

百度教育 sketch template

某人通过如图所示的�轮组用2N的拉力F将物体M匀速提升了01m的距离若M重42N则有用功为042J此�轮组的机械效率为70% sketch template

如图甲所示某人�自行车在平直的路面上运动当人停止蹬车后阻力做功使自行车最终停止在此过程中阻力做的功W与人刚停止蹬车时自行车的速度v的 sketch template

如图所示某人分别用300N和200N的力将同一个装有水的容器从地面直接搬到车上和通过斜面搬到车上．下列说法中不正确的是 A．用300N sketch template

绳杆两端关联加速度问题知乎 sketch template

高中物理轻杆类问题知乎 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

22．如图8所示装置中长木板甲重20N物体乙重 10N甲乙之间用一根轻绳通过定�轮相连当 水平方�的拉力F的大小为6N时长木板甲恰 sketch template

在生产生活中人们会用到轮轴轮轴由具有公共转轴的轮子和轴构成．1辘轳就是轮轴的一种它的侧面图如图甲所示辘轳也可以看成是杠杆的变形 sketch template

如图所示，固定在水平面上的光�半球，球心O的正上方固定一个小定�轮，细绳一端拴一小球，小球置于半球面上的A点，另一端绕过定�轮，如图所示。今 sketch template

一轮复习：动态平衡问题解题技巧知乎 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两物体AB通过跨过定�轮的轻绳相连物体B静止于水平地面上不计�轮处的�擦力则下列说法中正确的是 A．绳对B的拉力大小等于 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

如图5所示的皮带传动装置中轮A和B同轴ABC分别是三个轮边缘上的质点且rA=rC=2rB则三个质点的�心加速度之比aAaBaC sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

题目如图所示底面积为100cm2的薄壁圆柱形容器盛有适量的水重力为12N体积为2×10﹣3m3的木块A漂浮在水面上如图甲所示现将 sketch template

A如图所示两个物体 A 和 B 的质量分别为 M 用跨过定�轮的轻绳相连A 物体静止于水平面上不计�擦A物体对绳的作用力 sketch template

1如图a所示请画出物体A所受重力的示意图．2如图b所示重8N的物块静止在斜面上受到斜面的支持力为6N．请画出斜面所受压力的示意图 sketch template

如图所示．用力的示意图画出木箱受到的支持力．——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

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

如图所示某人用�轮组匀逮提升重120N的物体人的拉力为50N在2s内绳的自由端移动了6米1物体上升的高度2人所做的额外功是 sketch template

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