如图甲所示，一个�轮组竖直固定在天花板上，已知每个�轮均重20n，�轮组下端挂有重为g的物体a，用力f通过�轮组绳的末端竖直�上匀速提升重物a Sketch Coloring Page

如图甲所示，一个�轮组竖直固定在天花板上，已知每个�轮均重20n，�轮组下端挂有重为g的物体a，用力f通过�轮组绳的末端竖直�上匀速提升重物a Template

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sketch #2645 Flowers in window

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sketch #4974 Eminem by Juan Garcia

anonymous

anonymous
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anonymous

anonymous
sketch #4511 Yao Ming by Betty Marie Melzer

sketch #3575 Stitch by Laura Gutierrez Hinojosa

anonymous

anonymous
sketch #3575 Stitch by Laura Gutierrez Hinojosa

sketch #5237 Gotye by Jhonatan Soares

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anonymous
sketch #5237 Gotye by Jhonatan Soares

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sketch #2250 lelouch

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anonymous
sketch #2250 lelouch

sketch #5287

anonymous

anonymous
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sketch #4682 Elvis Presley by Nassim Nouri

anonymous

anonymous
sketch #4682 Elvis Presley by Nassim Nouri

sketch #4640 Serj Tankian by Dav Guzman Mendoza

anonymous

anonymous
sketch #4640 Serj Tankian by Dav Guzman Mendoza

sketch #2308

anonymous

anonymous
sketch #2308

sketch #3431 Jimi Hendrix by Konvicted Rohit

anonymous

anonymous
sketch #3431 Jimi Hendrix by Konvicted Rohit

sketch #3014 Fancy

James Forest
sketch #3014 Fancy "S "

sketch #4984 Zombie by London Waterlilly

anonymous

anonymous
sketch #4984 Zombie by London Waterlilly

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sketch #5086 Lion by Z Ionut Ady

anonymous

anonymous
sketch #5086 Lion by Z Ionut Ady

sketch #3469

anonymous

anonymous
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sketch #5166 Jigsaw by Gisele Siqueira Zanni

anonymous

anonymous
sketch #5166 Jigsaw by Gisele Siqueira Zanni

sketch #5164

anonymous

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sketch #4646 Panda by Raimundo Santos

anonymous

anonymous
sketch #4646 Panda by Raimundo Santos

tomski如图甲所示，一个�轮组竖直固定在天花板上，已知每个�轮均重20n，�轮组下端挂有重为g的物体a，用力f通过�轮组绳的末端竖直�上匀速提升重物a 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

如图甲所示，一个�轮组竖直固定在天花板上，已知每个�轮均重20N，�轮组下端挂有重为G的物体A，用力F通过�轮组绳的末端竖直�上匀速提升重物A 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

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

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图甲所示的�轮组运送货物上楼每件货物重100N每次运送的量不定乙图绘出了整个过程中�轮组的机械效率随货物重力增加而变化的图象解答下列 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

小军同学用如图甲所示�轮组在绳子自由端用25N的力将100N重物匀速提高1m若不计绳重及一切�擦以下说法正确的是 A．这个�轮组的机械 sketch template

如图所示是测定�轮组机械效率的实验装置．1应匀速竖直匀速竖直�上拉弹簧秤使物体A升高从弹簧秤上读出拉力拉力的值用刻度尺测出重物上升的 sketch template

12．用如右图所示�轮组甲和乙提起同样重的物体时甲�轮组的机械效率为η甲乙�轮组的机械效率为η乙则可判定η甲 η乙．如果用乙�轮组第一次 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

百度教育 sketch template

百度教育 sketch template

如图甲所示在水面上方匀速提升密度为3×103kg/m3的物体时绳端所用的拉力为300N�轮组的机械效率为60%．如果将物体全部浸没在水中 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

百度教育 sketch template

如图是探究“阻力对物体运动的影响 的过程．1根据图��中情景可以判断的是实验事实是实验推论．2每次让小车从斜面同一高度由静止 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01s的机械秒表，其示数是s。 sketch template

如图甲所示两个相同的AB正方体并排放在水平桌面上时它们对桌面的压强为P若将它们按图乙所示叠放则它们对桌面的压强为2P若按图丙所示将 sketch template

如图所示一个弹簧振子在AB两点之间作简谐运动某时刻物体正经过C点�上运动速度大小为vC已知OC=a物体的质量为m振动�期为T则从此 sketch template

一轮复习：动态平衡问题解题技巧知乎 sketch template

题目小雨通过如图甲所示�轮组将水中物体匀速提升至空中他所用拉力F与绳子自由端移动的距离s的关系图象如图乙所示．其中物体在空中匀速上升过程 sketch template

如图甲所示竖直放置轻弹簧下端与放在水平地面上的物块A相连上端与物块B相连物块C在B的正上方某处自由下落与B碰后黏合在一起后继续下降在 sketch template

如图所示�轮组相同钩码相同甲挂一个钩码乙挂两个钩码用�轮组将钩码提升相同的高度不计绳子与�轮的�擦和绳重下列说法正确的是 sketch template

如图15所示小明分别用甲�轮乙�轮把重力相同的物体匀速提升到相同的高度则 A．使用甲�轮可以省力 B 使用乙�轮可以改变力的方� C sketch template

如图甲所示在水平地面上固定一竖直轻弹簧弹簧上端与一个质量为01kg的木块A相连质量也为01kg的木块B叠放在A上AB都静止．在B 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

如图甲所示用弹簧秤将重为39N的物块从斜面的底端匀速拉至顶端则物块所受拉力为26N已知斜面的高为4m长为8m斜面的机械效率为75 sketch template

如图甲所示在同一竖直平面内的两正对着的相同的半圆光�轨道相隔一定的距离x虚线沿竖直方�．一小球能在其间运动今在最高点与最低点各放个 sketch template

如图甲所示是工人利用�轮组从竖直深井中提取泥土的情形所用动�轮和筐受到的总重力为40N．某次操作中将泥土以05m/s的速度匀速提起在此 sketch template

百度教育 sketch template

如图甲所示轻杆一端固定在O点另一端固定一小球现让小球在竖直平面内做半径为R的圆�运动小球运动到最高点时杆与小球间弹力大小为F小球在 sketch template

百度教育 sketch template

百度教育 sketch template

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