7．如图3所示重为g的物体在水平地面上受斜�左下方与水平面成角的推力f作用而做匀速直线运动则下列说法中正确的是 A．物体对地面的压力 Sketch Coloring Page

7．如图3所示重为g的物体在水平地面上受斜�左下方与水平面成角的推力f作用而做匀速直线运动则下列说法中正确的是 A．物体对地面的压力 Template

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tomski7．如图3所示重为g的物体在水平地面上受斜�左下方与水平面成角的推力f作用而做匀速直线运动则下列说法中正确的是 a．物体对地面的压力 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

15．如图10所示重力为G的物体在与竖直方�成角的力作用下恰能沿竖直墙壁在竖直方�上做匀速运动物体与墙壁间的动�擦因数为求力的大小为多 sketch template

7．如图3所示重为G的物体在水平地面上受斜�左下方与水平面成角的推力F作用而做匀速直线运动则下列说法中正确的是 A．物体对地面的压力 sketch template

14．如图所示重为G的物体放在倾角为θ的斜面上根据重力的实际效果可将重力分解为平行于斜面使物体下�的分力 F1和垂直于斜面使物体紧压斜面的 sketch template

如图所示重为G的物体A放在粗糙的斜面上处于静止状态若用一个方�始终沿斜面�上大小从零开始逐渐增大的变力F作用在物体上使物体从静止状态 sketch template

如图所示重为G的物体在与水平夹角α的力作用下沿竖直墙壁�上匀速运动物体与竖直墙壁的动�擦因数为μ则物体受到的�擦力大小为 A．μGB sketch template

15．如图所示所受重力为G的均匀小球放在倾角为α的斜面上球被与斜面夹角为θ的木板挡住球面木板均光�．若使球对木板压力最小则木板与斜面 sketch template

12．如图重为G的物体在倾角为Ө的粗糙斜面上受力F作用处于平衡状态则斜面对物体的作用力为 A． B． C．FsinӨ GcosӨ sketch template

如图重为G的物体在沿斜面�上的拉力作用下从斜面的底部移到顶部设斜面长为s高为h拉力为F物体受到的�擦力为f．则斜面的机械效率为 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

3．如图所示重为100N的物体在水平�左的力F=20N作用下以初速度v0沿水平面�右�行已知物体与水平面的动�擦因数 为02则此时 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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在杠杆AB上挂了一个重为G 的物体为使杠杆在图中的位置静止．请在杠杆上画出最小的动力F 和它的方� 第25题图 第26题图 第27 sketch template

如图所示轻杆OA可绕支点0转动在OA的C点悬挂一重为G 的物体细绳的一端拉住杆的A端另一端拴在墙上的B点使杆OA在图示位置平衡细绳 sketch template

如图所示可绕O点转动的轻质杠杆在D点挂一个重为G的物体M用一把弹簧测力计依次在ABC三点沿圆O相切的方�用力拉都使杠杆在水平位置 sketch template

如图所示有一斜面长为L高为h现用力F沿斜面把物重为G的物体从底端匀速拉到顶端物体所受斜面的�擦力为f．1有同学认为物体做匀速直线 sketch template

1如图a所示请画出物体A所受重力的示意图．2如图b所示重8N的物块静止在斜面上受到斜面的支持力为6N．请画出斜面所受压力的示意图 sketch template

重为G的物体在竖直�上的力F1和F2的作用下v T图象分别为如图��则 A．F1=F2B．F1＜F2C．F1＞F2D．无法确定题目和 sketch template

如图所示在轻质杆OB的中点A处悬挂有重为G的物体M在端点B施加方�始终跟杆垂直的拉力F杆从虚线位置沿逆时针方�匀速转至图示位置的过程中 sketch template

如图所示物体静止在斜面上重力G沿平行于斜面和垂直于斜面方�分解为F1和F2则 A．F1与作用在物体上的静�擦力相平衡B．F2就是物体 sketch template

如图所示斜面长为L高为h现用力F沿斜面把重为G的物体从底端匀速拉到端已知物体受到斜面的�擦力为f则下列关于斜面机械效率η的表达式正确 sketch template

如图所示重为G的质点P与三根劲度系数相同的轻弹簧ABC相连C处于竖直方�静止时相邻弹簧间的夹角均为1200已知弹簧AB对质点P的 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3所示一个质量为m的物体以某一速度由斜面底端冲上倾角为300的固定斜面其加速度大小为g在斜面上上升的最大高度为h则在这个过程中 sketch template

如图所示在倾角为θ的光�斜面上重为G的物体受到未知水平推力F的作用使物体静止不动则1物体对斜面的压力为多大2水平推力F为多 sketch template

如图所示，已知一重量G=10N的物体放在水平面上，水平面和物体间的静�擦系数。请分析下列情况：思越教育官� sketch template

如图所示物体A重10NB重20N．两个相同的力F=4N同时作用在AB两个物体上使它们在平面C上同步做匀速直线运动．则AB间的�擦力 sketch template

如图所示重为G的物体放在水平面上推力F与水平面夹角为θ物体处于静止状态已知物体与地面间的动�擦因数为μ则物体所受的�擦力大小为多� 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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为 sketch template

如图所示放在水平地面上的物体受到一个与水平方�成37°斜�下的拉力F=50N的作用下�右做匀速直线运动其中拉力F=50N物重G=100N sketch template

试卷预览：第二章物体的平衡 sketch template

百度教育 sketch template

百度教育 sketch template

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