2．如图所示不计任何�擦分别用定�轮动�轮�轮组把同一个物体匀速升到同一高度其中机械效率最高的是 A．定�轮 B．动�轮 C．�轮组 Sketch Coloring Page

2．如图所示不计任何�擦分别用定�轮动�轮�轮组把同一个物体匀速升到同一高度其中机械效率最高的是 A．定�轮 B．动�轮 C．�轮组 Template

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anonymous

anonymous
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anonymous

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anonymous

anonymous
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anonymous

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anonymous

anonymous
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anonymous

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sketchmaster
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anonymous

anonymous
sketch #5191 The View by Vicente Vera

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anonymous

anonymous
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anonymous

anonymous
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sketch #5092 Silvers Rayleigh by Wasim Khan

anonymous

anonymous
sketch #5092 Silvers Rayleigh by Wasim Khan

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anonymous

anonymous
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sketch #3760 PSY by Juvenilia Alexandrino

anonymous

anonymous
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anonymous

anonymous
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anonymous

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anonymous

anonymous
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sketch #2453 Koi Fish

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sketch #3539 Octo by Aristo A. Kadir

anonymous

anonymous
sketch #3539 Octo by Aristo A. Kadir

tomski2．如图所示不计任何�擦分别用定�轮动�轮�轮组把同一个物体匀速升到同一高度其中机械效率最高的是 a．定�轮 b．动�轮 coloring

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

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

2．如图所示不计任何�擦分别用定�轮动�轮�轮组把同一个物体匀速升到同一高度其中机械效率最高的是 A．定�轮 B．动�轮 C．�轮组 sketch template

2．如图所示不计任何�擦分别用定�轮动�轮�轮组把同一个物体匀速升到同一高度其中机械效率最高的是 A．定�轮 B．动�轮 C．�轮组 sketch template

如图甲、乙所示分别是小华用刻度尺测量木块的长度和用机械秒表测量时间的情形，则图甲中测得木块的长度为cm；图乙中机械秒表的读数为s。 sketch template

一轮复习：阿特伍德机类型知乎 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，电源电压恒为18V，定值电阻R1=20Ω，�动变阻器R2标有“40Ω 05A”，电流表A的量程为006A，电压表量程为0 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

动力学的解题方法知乎 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

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

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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

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

一轮复习：动态平衡问题解题技巧知乎 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

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

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

2．如图2所示一条细绳跨过定�轮连接物体ABA悬挂起来B穿在一根竖直杆上两物体均保持静止不计绳与�轮B与竖直杆间的�擦已知绳与 sketch template

百度教育 sketch template

如图所示设两重物的质量分别为m1和m2且m1&gtm2定�轮的半径为r对转轴的转动惯量为J轻绳与�轮间无�动�轮轴上�擦不计设开始时 sketch template

小明测�轮组机械效率的实验过程如图14所示小明匀速拉动弹簧测力计时弹簧测力计的示数如图丁所示 1根据上面的实验数据计算该�轮组做的 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

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1小明用定�轮和动�轮分别将相同物体匀速提升相同的高度如图1所示不计绳重与�擦且动�轮重G动小于乙物体的物重G则所用的拉力F甲＞F乙 sketch template

22．如图所示用定�轮和动�轮分别将质量相同的甲乙两物体匀速提升相同的高度不计绳重与�擦且动�轮重G动小于乙物体的物重G则所用的拉力 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

如图所示质量为m2的物体2放在车厢地板上．用竖直细绳通过定�轮与质量为m1的物体1连接．不计�轮�擦当车厢水平�右加速运动时物体2仍在 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

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

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