如图所示用力�下压长棒撬起一块大石头对长棒的力是动力动力的作用效果是使长棒针转动．图中若用竖直�下的力f压长棒时大石头未撬动．可把 Sketch Coloring Page

如图所示用力�下压长棒撬起一块大石头对长棒的力是动力动力的作用效果是使长棒针转动．图中若用竖直�下的力f压长棒时大石头未撬动．可把 Template

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tomski如图所示用力�下压长棒撬起一块大石头对长棒的力是动力动力的作用效果是使长棒针转动．图中若用竖直�下的力f压长棒时大石头未撬动．可把 coloring

如图所示用力�下压长棒撬起一块大石头 对长棒的力是动力动力的作用效果是使长棒 针转动．图中若用竖直�下的力F压长棒时大石头未撬动．可把 sketch template

如图所示要用撬棒把路中间的一块大石头撬起请以点O为支点在撬棒末端A处画出最省力的用力方�并标出此时动力F的力臂L 题目和参考答案 sketch template

如图所示�路工人用撬棒撬石头O为撬棒的支点请画出作用在撬棒上动力F的力臂．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示用一根硬棒撬起一个石块棒的上端A是动力的作用点若用最小的力撬动石块请标出此时杠杆的支点O并画出最小动力F及动力臂L．题目和 sketch template

用如图所示的撬棒撬起一块石头时这根撬棒是 A．省力杠杆B．费力杠杆C．等臂杠杆D．省功杠杆——青夏教育精英家教�—— sketch template

如图所示用撬棒撬起大石头�上�下用力都可以对于这两种使用方式下列分析正确的是 A�上撬更省力因为�上时动力臂更长B．�上撬更 sketch template

如图所示用一根硬棒撬一个大石块棒的上端A是动力作用点．在杆上画出撬动石块动力F为最小时的方�．题目和参考答案——青夏教育精英家教�—— sketch template

3．如图所示用撬棒撬起大石头�上�下用力都可以哪一种方式更省力请你具体说明原因——青夏教育精英家教�—— sketch template

如图是工人用撬棍撬石头的示意图．请画出动力F1 的力臂并画出石头对撬棍压力的示意图．题目和参考答案——青夏教育精英家教�—— sketch template

�援队�要使用撬棒把滚落在公路上如图所示的石块1 撬起既可以�上抬撬棒也可以�下压撬棒请在图中分别画出抬撬棒时和压撬棒撬石块1时的支点A sketch template

如图所示使用撬棒把石块1撬起若在撬棒D点沿DM方�用力撬起石块1撬棒的支点是 点撬起石块l时沿DM方�用力 沿DN方�用力．题目和 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

百度教育 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

如图所示的压緊机构在力F的作用下驱动杆通过连杆1、�杆、连杆2带动压杆�下运动将工件压紧。压紧时连杆1和连杆2与�杆垂直且连杆2与压 sketch template

如图所示利用羊角锤撬起钉子请你在羊角锤A点处画出所能施加最小动力F1并画出阻力F2的阻力臂L2．题目和参考答案——青夏教育精英家教�—— 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质量为m的物体在的水平力作用下沿倾角为q =30º的斜面�上匀速运动根据力学规律和题中提供的信息你还能求得哪几个作用力及跟�擦 sketch template

5．如图所示两物体与水平面间的动�擦因数相同它们 的质量相等在甲图用力F1推物体在乙图用力F2拉物体两种情况下物体都做匀速运动 sketch template

如图所示的物体A静止在斜面上请画出物体A所受重力的示意图画出图乙中细线对木块A拉力的示意图．题目和参考答案——青夏教育精英家教�—— 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．用力的示意图画出木箱受到的支持力．——青夏教育精英家教�—— sketch template

如图所示叠放在一起的物体A和B在大小为F的恒力作用下沿水平面做匀速直线运动则下列结论中正确的是 A．甲乙两图中A物体所受的�擦力大小均 sketch template

如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 sketch template

如图所示在用力F拉小船匀速靠岸的过程中若水的阻力保持不变下列叙述中不正确的是 A小船所受的合外力保持不变 B船所受的浮力不断减小 C sketch template

如图所示用力F把同一正方体分别压在水平桌面上和竖直墙面上则竖直墙面受到的压强于桌面受到的压强若正方体重为G边长为a则竖直墙面受到的 sketch template

如图所示在用力F推动斜面体沿水平面匀速�行的过程中物块始终在斜面上相对静止．在此过程中推力F对斜面体做正功物块对斜面体的静�擦力对斜面 sketch template

如图所示重500N的物体与地面间的�擦力为144N为使物体匀速移动6m必须在绳的自由端加60N的水平拉力．那么拉力做的有用功是 J此 sketch template

如图所示是人们用木棒撬石块�上�下用力都可以撬起石块这两种情况人们所用力的大小是 A．F上＞F下B．F上=F下C．F上＜F下D．无法 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

5．如图所示将一把钢尺压在桌面上一部分伸出桌面 用手拨动其伸出桌外的一端轻拨与重拨钢尺则钢尺�出声音的 不同选填“音调 “响度 sketch template

如图所示的压紧机构，在力F 的作用下，�杆和连杆带动压紧臂转动，压杆上的压头便能将工件压紧。当连杆转至与底座垂直方�时，工件受到的压紧力最大 sketch template

动力学的解题方法知乎 sketch template

15．如图所示物体A叠放在物体B上在拉力F的作用下物体A和B一起沿着水平地面作匀速直线运动下列关于物体A受力的示意图正确的是 A．B sketch template

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