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05ms的速度�左做匀速直线运动．则物体受到的�擦力大小为 Sketch Coloring Page

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05ms的速度�左做匀速直线运动．则物体受到的�擦力大小为 Template

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sketch #4821 Johnny M. by Z Ionut Ady

anonymous

anonymous
sketch #4821 Johnny M. by Z Ionut Ady

sketch #1385 fingerschpitsengeful

anonymous

anonymous
sketch #1385 fingerschpitsengeful

sketch #2206

anonymous

anonymous
sketch #2206

sketch #5009 Elen Jager from Attack on Titan

anonymous

anonymous
sketch #5009 Elen Jager from Attack on Titan

sketch #1444

Donara Smbatyan
sketch #1444

sketch #5308 Taylor Swift by Gabi Ferrari

anonymous

anonymous
sketch #5308 Taylor Swift by Gabi Ferrari

sketch #5116 Bleach by Vrushali Rane

anonymous

anonymous
sketch #5116 Bleach by Vrushali Rane

sketch #4031

anonymous

anonymous
sketch #4031

sketch #2070

anonymous

anonymous
sketch #2070

sketch #2729 Luffy by Jayme Sousa

Jayme Sousa
sketch #2729 Luffy by Jayme Sousa

sketch #124 saurez

Tom Kelly
sketch #124 saurez

sketch #4882 Monsters University by John Davis

anonymous

anonymous
sketch #4882 Monsters University by John Davis

sketch #2992 Dragon by Iky Sahendra Putra

anonymous

anonymous
sketch #2992 Dragon by Iky Sahendra Putra

sketch #3651 Istanbul by DjDarío GT

anonymous

anonymous
sketch #3651 Istanbul by DjDarío GT

sketch #1287 No smoke

anonymous

anonymous
sketch #1287 No smoke

sketch #20840 Dog by Laur Ūūtiis

anonymous

anonymous
sketch #20840 Dog by Laur Ūūtiis

sketch #4232 Tobirama by Kadi Kader

anonymous

anonymous
sketch #4232 Tobirama by Kadi Kader

sketch #5170

anonymous

anonymous
sketch #5170

sketch #3404 Terminator by Enrique L. Manly

anonymous

anonymous
sketch #3404 Terminator by Enrique L. Manly

sketch #1118 easy zombie

anonymous

anonymous
sketch #1118 easy zombie

sketch #3083 Great illustration Ali Hänel

anonymous

anonymous
sketch #3083 Great illustration Ali Hänel

sketch #2017 HEYOO

anonymous

anonymous
sketch #2017 HEYOO

sketch #4945

anonymous

anonymous
sketch #4945

sketch #2452 Manga by sketchmaster

sketchmaster
sketch #2452 Manga by sketchmaster

sketch #666

Tom Kelly
sketch #666

sketch #4883 White tiger by Kayson Danielle

anonymous

anonymous
sketch #4883 White tiger by Kayson Danielle

sketch #5050

anonymous

anonymous
sketch #5050

sketch #3360

anonymous

anonymous
sketch #3360

sketch #5073 Broken Heart by Islam Mourad

anonymous

anonymous
sketch #5073 Broken Heart by Islam Mourad

sketch #5072

anonymous

anonymous
sketch #5072

tomski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05ms的速度�左做匀速直线运动．则物体受到的�擦力大小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

14．如图8所示用恒力F通过光�的定�轮将静止于水平面上的物体从位置A拉到位置B物体可视为质点定�轮距水平面高为h物体在位置AB时 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05m/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

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两个�轮分别匀速提升AB两个物体拉细绳的力F大小相等在相同时间内物体上升的距离也相等绳重及�擦不计�轮的质量小于物体的 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

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

一轮复习：阿特伍德机类型知乎 sketch template

如图所示用一机械效率为90%�轮组拉着重900N的物体A沿水平方�在40s内匀速移动了8m拉力F所做的功为1200J．则 A．拉力的 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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某人用恒力F通过�轮把放在水平面上的物体�右拉动了L力的方�始终与水平方�成θ角求拉力F对物体做的功．题目和参考答案——青夏 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

如图所示�轮重及�轮�擦不计物体A和B都处于静止状态下列几种说法中正确的是A．两物体重力的大小关系是G1＝2G2B．A物体受到的�擦力的 sketch template

如图所示用两个�轮分别匀速提升AB两个物体拉细绳的力F大小相等在相同时间内物体上升的距离也相等绳重及�擦不计�轮的质量小于物体的 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

如图所示不考��轮重及�擦力物B重20NA为一动�轮绳的一端固定在地面上当� 轮在力F的作用下匀速上升时所用拉力F为 A sketch template

如图1所示重为8N的物体A在拉力F的作用下5s内匀速运动了05m．拉力F做的功随时间变化的图象如图2所示．己知动�轮重05N物体A在 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

如图3 2所示用水平力F拉着重为100N的物体在水平地面上�左匀速移动了5m物体所受地面的�擦力大小为20N则 A重力做的功是 sketch template

如图所示用20N的力F拉着重为100N的物体使其沿水平面以02m/s的速度匀速运动了5s若每个�轮重10N忽略绳重和�擦则下列说法 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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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

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用水平方�的50N的力将重为30N的物体压在竖直的墙壁上使其静止．则物体受到�擦力的大小是 A 50N B 30N C 20N D 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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物体A重30N用F等于50N的力垂直压在墙上静止不动则物体A所受的�擦力是30N物体B重30N放在一平方米的桌面上B的底 sketch template

如图所示的�轮组不计绳重及�擦重物G=100N当拉力F=40N时重物刚好匀速上升则动�轮重 N当重物上升05m时拉力F端上升 sketch template

如图所示，一物块置于水平地面上，当用与水平方�成60°角的力F 1拉物块时，物块做匀速直线运动，当改用与水平方�成30°角的力F 2推物块时 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用一水平力F将一重20N的物体匀速推上高为1m斜面长为2m的光�斜面则力F对物体做的功为 A．20JB．80J C sketch template

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