如图所示�轮组在拉力f1的作用下拉着重300n的物体a以1ms的速度在水平面上匀速移动物体a匀速运动时受的阻力为70n拉力f的功率为 Sketch Coloring Page

如图所示�轮组在拉力f1的作用下拉着重300n的物体a以1ms的速度在水平面上匀速移动物体a匀速运动时受的阻力为70n拉力f的功率为 Template

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anonymous

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sketch #3760 PSY by Juvenilia Alexandrino

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anonymous
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anonymous

anonymous
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sketch #5133 Jiraiya by Saiful Farizam

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sketch #5093 Pedro Henrique Jordan Coquet

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Daniel Lachman
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sketch #2899 Snoopy by Rhemzkian Esturco

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anonymous
sketch #2899 Snoopy by Rhemzkian Esturco

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anonymous
sketch #5078 Naruto by Shimun Yeyo Ahmed

sketch #4742

anonymous

anonymous
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anonymous

anonymous
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sketch #4305 Burka,

Ainhoa White
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anonymous

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anonymous

anonymous
sketch #4405 Cat by Nizamuddin Shuja

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anonymous
sketch #5169 Iron Man by Hannah Kellogg

sketch #2635 Zoidberg by sketchmaster

sketchmaster
sketch #2635 Zoidberg by sketchmaster

sketch #3398 Sharingan by حيرتني بصمتها

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anonymous
sketch #3398 Sharingan by حيرتني بصمتها

sketch #1119 crimson

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anonymous
sketch #1119 crimson

tomski如图所示�轮组在拉力f1的作用下拉着重300n的物体a以1ms的速度在水平面上匀速移动物体a匀速运动时受的阻力为70n拉力f的功率为 coloring

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用F为40 N的拉力通过�轮组拉着重为300 N的物体A在水平面上以04 M/s的速度�左做匀速直线运动物体受到的�擦力是物重 sketch template

如图所示�轮组在拉力F1的作用下拉着重300N的物体A以1m/s的速度在水平面上匀速移动物体A匀速运动时受的阻力为70N拉力F的功率为 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重为80N的物体在大小为20N方�水平�右的拉力F1作用下在水平面上以2m/s速度做匀速直线运动．当撤去拉力F1物体静止后 sketch template

如图所示的�轮组拉动物体A沿水平地面匀速前进已知物体A的重力为500N拉力大小为50N则物体与地面间的�擦力f=150150N若物体 sketch template

一轮复习：动态平衡问题解题技巧知乎 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是由三个相同的�轮组装成提升重物的装置固定点O所能承受的最大拉力为2300N．在不计绳重和轴的�擦情况下假设绳子足够结实提起 sketch template

如图所示物体A在拉力作用下沿水平面匀速运动了一段距离S试比较拉力F1F2及拉力所做的功W1W2的大小�轮重绳重及绳与�轮之间的�擦 sketch template

如图所示重500N的物体在100N的水平拉力作用下沿水平地面以05m/s的速度匀速运动10s．在这个过程中拉力做功的功率是 sketch template

如图所示用�轮组将密度为 28×103kg/m3质量为56kg�属块完全在水中匀速提升05m加在绳子自由端的拉力是F动�轮重120N sketch template

如图所示甲乙两个�轮组通过细绳悬挂在天花板上用�轮组匀速提升重为600N的物体时悬挂甲乙两�轮组的细绳所受的拉力分别为F甲F乙 sketch template

如图所示的�轮组绳端在拉力F的作用下使物体A匀速上升则 A 拉力F所做的功为有用功B 钩码对物体A所做的功为总功C sketch template

如图所示用�轮组提起一个密度为25×103kg/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

如图所示用�轮组牵引小车沿水平地面匀速前进图中甲甲�轮是定�轮乙乙�轮是动�轮．已知小车的重量G=5N拉力大小F=3N则物体与地面 sketch template

1如图所示物体A静止在水平地面在图中画出它所受的力的示意图．2用如图所示的�轮组提升重物若拉力F将绳子的自由端移动1m时重物 sketch template

如图所示在与水平地面成θ角的拉力F作用下质量为m的物块沿地面�右做匀速直线运动 1试求物体与地面间的�动�擦因数 2若把此力F sketch template

如图所示是一个从隧道中运矿石的装置图用�轮组拉着重600N的货车A沿水平方�匀速运动货车受到的�擦力是货车重力的02倍．在40s内物体 sketch template

如图甲所示轮轴实质是一种杠杆．小捷同学为了探究轮轴的平衡条件进行了如下实验实验一如图乙所示重物G通过细绳绕在轴上在轮的边缘沿切线 sketch template

用如图所示的�轮组在20 S内将重600 N的物体从地面竖直提高4 M，所用的拉力是250 N，在这个过程中，求： 1有用功是多�？ 2 sketch template

小明利用如图所示的�轮组将重为900N的物体从一楼匀速提升到六楼所用的拉力为360N绳子自由端移动的速度为03m/s．求1小明所用 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用�轮组提起重G的物体绳子自由端拉力为F重物以速度v匀速上升不计�擦和绳重则1�轮组的机械效率为G3F×100%G3F 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

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

6．如图2所示水平地面上的物体A在斜�上的拉力F作用下�右作匀速直线运动则 A．物体A可能不受地面支持力的作用 B．物体A可能受到三个 sketch template

如图所示装置由�轮组和箱子组成，动�轮自身重力为G动，动�轮下方的箱子重力为G箱，箱子内有一重力大小为GA的物体，箱子外面悬挂一个重力为GB的 sketch template

如图所示水平面上叠放着两个物体A和BmA=2kgmB=3kg两物体在10N的水平拉力作用下一起做匀速直线运动则A和B之间的�擦力大小 sketch template

如图所示O1轴上有两个转动轮大轮半径为2r小轮的半径为r轮O2的半径为 R对于轮缘上的ABC三点则ωAωBωC=112 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

如图所示皮带传动中O1O2两轮的轴固定当主动轮O1先逆时针转动时不打�的皮带也使从动轮O2逆时针转动试确定两轮边缘上的A点和B点所 sketch template

如图所示物体A通过�轮在水平拉力F的作用下沿水平面以1m/s 的速度做匀速直线运动此时弹簧测力计的示数为4N若不计动�轮绳子弹簧测力 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

在图所示的�轮组中用110N的力在5s内把重为200N的物体匀速提高2m则 A．对重物做的有用功约为200J B．�轮组的机械效率约为90 sketch template

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