如图所示用水平外力f将�板擦压在竖直的�板上保持静止当逐渐增大外力f时�板对�板擦的�擦力将 A．保持不变b．逐渐增大c．逐渐减小d Sketch Coloring Page

如图所示用水平外力f将�板擦压在竖直的�板上保持静止当逐渐增大外力f时�板对�板擦的�擦力将 A．保持不变b．逐渐增大c．逐渐减小d Template

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sketch #1551 donara

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sketch #4948 Snow White by George Lucaz

anonymous

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anonymous
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tomski如图所示用水平外力f将�板擦压在竖直的�板上保持静止当逐渐增大外力f时�板对�板擦的�擦力将 a．保持不变b．逐渐增大c．逐渐减小d coloring

如图所示物体A用轻质细绳与圆环B连接圆环套在竖直杆MN上用一水平力F作用在绳上的O点使整个系统处于静止状态．现用水平力将O点缓慢�左上方 sketch template

如图所示在水中有一只小船用一根轻质细线绕过一个光�的定�轮在水平外力F作用下小船缓缓靠岸在此过程中小船所受水的阻力恒定则在此过程中 sketch template

如图a所示物体原来静止在水平面上用一水平力F拉物体在F从0开始逐渐增大的过程中物体先静止后又做变加速运动其加速度a随外力F变化的 sketch template

如图所示用水平方�的力F拉绳子的一端P使物体A以2m/s的速度�左匀速运动此时弹簧测力计的示数为8N．不计�轮绳弹簧的测力计的重力及 sketch template

如图所示矩形物块甲和丙在水平外力F的作用下静止在物体乙的斜面上物体乙静止在水平地面上现减小水平外力F三物体仍然静止则下列说法中正确的 sketch template

如图所示一块长木板B放在光�的水平面上在B上放一物体A现以恒定的外力拉B由于AB间�擦力的作用A将在B上�动以地面为参照物A sketch template

如图甲所示完全相同的木块A和B叠放在水平桌面上在水平拉力F1作用下A．B一起作匀速直线运动若将A．B紧靠着放在水平桌面上用水平力F2 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

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，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=2kg的小物块在水平拉力F作用下由静止开始从A点出�沿粗糙水平轨道做匀加速直线运动到达B点时撤消外力物块冲上竖直 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

如图所示用水平外力F将�板擦压在竖直的�板上保持静止当逐渐增大外力F时�板对�板擦的�擦力将A保持不变B逐渐增大C逐渐减小D无法 sketch template

一轮复习：动态平衡问题解题技巧知乎 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

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AB时 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

用水平推力F将AB两木块挤压在竖直墙壁上木块B受到墙壁的�擦力为f1木块B受到木块A的�擦力为f2木块B重为GB下列说法正确的是 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一物体在水平地面上物体受到水平�右的推力F1=8N水平�左的推力F2=2N的作用物体处于静止状态．则下面判断正确的是 A sketch template

如图所示物体A通过轻质细绳拉光�水平面上的物体B现用适当的外力作用在物体B上使沿物体A沿光�竖直杆以速度v匀速下�的细绳与竖直杆间的夹角 sketch template

如图所示用一个与水平面成θ角的恒力F推着质量为m的木箱沿光�水平面�右运动则在作用时间t内下列说法中正确的是 A．重力的冲量为 sketch template

如图所示物体A置于水平面上物A前固定有动�轮BD为定�轮．一根轻绳绕过DB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，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

17．如图所示叠放在一起的AB两物体在水平力F的 作用下沿水平面以某一速度匀速运动现突然将作 用在B上的力F改为作用在A上并保持大小 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

如图所示水平面上叠放着两个物体A和BmA=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

光�水平地面上叠放着两个物体A和B如图7所示．水平拉力F作用在物体B上使AB两物体从静止出�一起运动．经过时间t撤去拉力F再经过时间 sketch template

如图所示用水平拉力F拉上表面粗糙程度各处相同的物体A使其在水平地面上匀速运动当物体B静止不动时与水平绳相连的弹簧测力计的示数不变．关于 sketch template

如图所示相同材料制成的粗糙程度相同的两个物块AB中间用一不可伸长的轻绳连接用一相同大小的恒力F作用在A物体上使两物块沿力的方�一起运动 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

如图所示物体在粗糙的水平面上受到一个与水平方�成α角的拉力F的作用匀速�右运动若拉力F的方�与水平方�所成的α角的减小物体仍匀速运动 sketch template

水平地面上的物体在水平方�受到一个拉力F和地面对它的�擦力f的作用在物体处于静止状态的条件下下面各说法中正确的是 A当F增大时f也随之 sketch template

如图所示用一水平力F=30N将重20N的木块压在竖直墙壁上使其静止在竖直墙壁上画出木块受到力的示意图．题目和参考答案——青夏教育精英家教�—— sketch template

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