如图所示用一动�轮拉一物体a以05ms的速度 在水平面上作匀速直线运动物体a重为20n受到的� 擦阻力是物重的02倍水平拉力为2 Sketch Coloring Page

如图所示用一动�轮拉一物体a以05ms的速度 在水平面上作匀速直线运动物体a重为20n受到的� 擦阻力是物重的02倍水平拉力为2 Template

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anonymous

anonymous
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sketch #1451 mi6softlab vibra

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sketch #3974 Bird Skerch w/ vibration

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tomski如图所示用一动�轮拉一物体a以05ms的速度 在水平面上作匀速直线运动物体a重为20n受到的� 擦阻力是物重的02倍水平拉力为2 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用一动�轮拉一物体A以05m/s的速度 在水平面上作匀速直线运动物体A重为20N受到的� 擦阻力是物重的02倍水平拉力为2 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

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

百度教育 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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04 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

一轮复习：动态平衡问题解题技巧知乎 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

如图所示一恒力F通过一动�轮拉物体沿光�水平面前进了s在运动过程中F与水平方�保持θ角则拉力F对物体做的功为 AFscosθB sketch template

10．用图所示的�轮组水平拉动重为100N的物体以05 M／s的速度在水平地面上匀速运动若物体受到的�擦力为60 N不计机械自重和�擦 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

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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01s的机械秒表，其示数是s。 sketch template

百度教育 sketch template

如图所示体重为510N的人用�轮组拉重500N的物体A沿水平方�以002m/s的速度匀速运动运动中物体A受到地面的�擦阻力为200N sketch template

如图所示用一个定�轮和一个动�轮组成一个最省力的�轮组请画出它的绕线方法．题目和参考答案 ——青夏教育精英家教�—— 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

如图所示物体A置于水平面上物A前固定有动�轮BD为定�轮．一根轻绳绕过DB后固定在C点BC水平当用力以速度υ拉绳子时物体沿水平 sketch template

如图所示用F为30N的拉力通过�轮组拉着重为300N的物体在水平面上以05m/s的速度�左做匀速直线运动．则物体受到的�擦力大小为 sketch template

百度教育 sketch template

如图所示用�轮组拉着重900N的物体A沿水平方�匀速移动在40s内移动了8m拉力F所做的功为1280J．则1拉力的大小为 N功率 sketch template

百度教育 sketch template

如图所示甲乙两物体的s T图像则 A甲乙两物体都作匀速直线运动 B若甲乙两物体在同一直线上运动则一定会相遇 Ct1时刻 sketch template

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F甲 sketch template

如图所示用�轮组拉着物体A是正方体铁块边长是30cm．当拉力F=70N时物体A恰好做匀速直线运动．动�轮重15N已知ρ铁=78× sketch template

百度教育 sketch template

如图所示用�轮组提起一个密度为25×103kg/m3体积为004m3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

题目如图所示水平地面上固定一斜面斜面倾角为θ初始时将一物体A轻放在斜面上A与斜面间的动�擦因数为μ重力加速度为g下列分析正确的 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03m/s．求1小明所用 sketch template

如图所示用�轮组拉着重600N的物体A沿水平方�匀速移动在40s要内物体移动了8m拉力F做的功为1280J求1求拉力F的大小和 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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示数为4N则物块B所受�擦力大小及方�为 A 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

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

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