如图所示某人用�轮组匀速提起一个重为600n的重物人对绳的拉力为250n．在拉力的作用下重物匀速上升了3m求此过程中1绳子自由端 Sketch Coloring Page

如图所示某人用�轮组匀速提起一个重为600n的重物人对绳的拉力为250n．在拉力的作用下重物匀速上升了3m求此过程中1绳子自由端 Template

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More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

sketch #5270 Fresh prince by Fatér Szilvia

anonymous

anonymous
sketch #5270 Fresh prince by Fatér Szilvia

sketch #1724

anonymous

anonymous
sketch #1724

sketch #5166 Jigsaw by Gisele Siqueira Zanni

anonymous

anonymous
sketch #5166 Jigsaw by Gisele Siqueira Zanni

sketch #5204

anonymous

anonymous
sketch #5204

sketch #3447 Hidan (Akatsuki) by ßeyza Karaca

anonymous

anonymous
sketch #3447 Hidan (Akatsuki) by ßeyza Karaca

sketch #5050

anonymous

anonymous
sketch #5050

sketch #953

anonymous

anonymous
sketch #953

sketch #3014 Fancy

James Forest
sketch #3014 Fancy "S "

sketch #5314

anonymous

anonymous
sketch #5314

sketch #4751 Ruko by Rodrigo Marcos

anonymous

anonymous
sketch #4751 Ruko by Rodrigo Marcos

sketch #4734 Timon by Anh Vu

anonymous

anonymous
sketch #4734 Timon by Anh Vu

sketch #3489 Panda by Scott Terry

anonymous

anonymous
sketch #3489 Panda by Scott Terry

sketch #3362 The Boss by David Torre

anonymous

anonymous
sketch #3362 The Boss by David Torre

sketch #649

anonymous

anonymous
sketch #649

sketch #3483 Ginger

Sarah Nila
sketch #3483 Ginger

sketch #5067

anonymous

anonymous
sketch #5067

sketch #1995

Laura Agapi Asnicar
sketch #1995

sketch #5216 D by Gabriela Segura

anonymous

anonymous
sketch #5216 D by Gabriela Segura

sketch #293 jdjdjdjdj

Helyryn
sketch #293 jdjdjdjdj

sketch #2559 sun

anonymous

anonymous
sketch #2559 sun

sketch #5228 Rin & Len by Mark Phillips

anonymous

anonymous
sketch #5228 Rin & Len by Mark Phillips

sketch #1545

anonymous

anonymous
sketch #1545

sketch #3459 BLUE from fosters imagenary friends

anonymous

anonymous
sketch #3459 BLUE from fosters imagenary friends

sketch #5112

anonymous

anonymous
sketch #5112

sketch #2431 face :D

anonymous

anonymous
sketch #2431 face :D

sketch #804

Laura Agapi Asnicar
sketch #804

sketch #5040 Amy Winehouse by Timothy Palfreyman

anonymous

anonymous
sketch #5040 Amy Winehouse by Timothy Palfreyman

sketch #2781

Smile Better
sketch #2781

sketch #5192

anonymous

anonymous
sketch #5192

sketch #5316

anonymous

anonymous
sketch #5316

tomski如图所示某人用�轮组匀速提起一个重为600n的重物人对绳的拉力为250n．在拉力的作用下重物匀速上升了3m求此过程中1绳子自由端 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，现有质量分别为m、的小球a和物块b静置于光�的水平轨道上，水平轨道右端与光电装置相连，左端与一停在光�水平面上长为l、质量为的小车c 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

某人用如图15所示的�轮组吊起一个重1000N的物体�轮组的机械效率为80%他在5s内使绳子自由端移动8m求 1物体上升的高度和 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

题目某人用如图所示的�轮组在20s内将一个重为800N的物体沿着水平地面匀速拉动了4m拉力F做功为1440J物体与地面的接触面积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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用�轮组把重为80N的物体匀速提起1在不计绳重动�轮重和�擦的情况下拉力F的大小是 N2若实际的拉力为50N匀速将 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

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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

某人用如图所示的�轮组匀速提升500N的重物所用的拉力F为300N 绳子自由端被拉下2m在此过程中求�拉力F所做的功 ��轮组的 sketch template

如图所示物体A重为5N物体B重为10N若弹簧测力计自重及�轮�擦不计当它们处于平衡状态则弹簧测力计的示数为 A0N B2 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轮O1O3固定在同一轮轴上轮O1O2用皮带连接且不打�在O1O2O3三个轮的边缘各取一点ABC已知三个轮的半径比 sketch template

如图所示使用�轮组牵引重物沿水平地面匀速�动拉力F=50N则重物与地面的�擦力是不计绳重绳与轮之间的�擦A50NB25NC sketch template

如图所示表示三种不同的�轮组，用它们提起重为G的相同重物，在A端所用的拉力分别为F 1 = ；F 2 3 sketch template

�轮和功功率 Word文档在线阅读与下载免费文档 sketch template

百度教育 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

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9所示不计绳重及绳与轮的�擦铁块重79N被匀速提升2m拉力F做功200Jρ铁＝79×103kg/m3求�此�轮组的机械 sketch template

如图所示分别用两个�轮组在相同的时间内将重相同的物体G匀速提升相同的高度每个�轮的重均相同．不计绳重及�擦此过程中 A．甲的机械 sketch template

分别用图甲乙丙所示的�轮组匀速提起同一重物G时所用的拉力分别为F1F2和F3若不计�轮重及�擦这三个力的关系为 A．F1＜F2 sketch template

初中物理第四讲之�轮知乎 sketch template

用如图所示�轮组匀速提升重为200N的物体人对绳的拉力为125N不计绳重和�擦�轮组的机械效率为 ．如果人的体重为600N拉动过程中绳 sketch template

用如图所示的�轮组匀速提升浸没在水中的物体，已知G=3900N。圆柱形容器底面积S=06m²，物体浸没在水中时水面高度为100cm，当物体 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

用如图所示�轮组匀速提升重为200N的物体人对绳的拉力为125N不计绳重和�擦�轮组的机械效率为 ．如果人的体重为600N拉动过程中绳 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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人以600N的力�下拉动绕在�轮组的绳子一端10秒使绳端�下移动了15m重物匀速上升了05m已知�轮组的机械效率为70% sketch template

某人用如图所示的�轮组匀速提升500N的重物所用的拉力F为300N 绳子自由端被拉下2m在此过程中求�拉力F所做的功 ��轮组的 sketch template

用如图所示的�轮组匀速提升重400N的物体人对绳的拉力为250N不计绳重和�擦此时�轮组的机械效率为80%如果人的体重为600N拉动 sketch template

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