如图所示原来静止的物体a在水平拉力f作用下沿水平面做直线运动速度逐渐增大则拉力fa．一定大于阻力ff B．一定等于阻力ff C Sketch Coloring Page

如图所示原来静止的物体a在水平拉力f作用下沿水平面做直线运动速度逐渐增大则拉力fa．一定大于阻力ff B．一定等于阻力ff C Template

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tomski如图所示原来静止的物体a在水平拉力f作用下沿水平面做直线运动速度逐渐增大则拉力fa．一定大于阻力ff b．一定等于阻力ff c coloring

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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

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6所示在光�的水平面上物体B静止在物体B上固定一个轻弹簧物体A以某一速度沿水平方��右运动通过弹簧与物体B�生作用两物体的质量 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

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a所示在水平拉力F的作用下质量为2 Kg的物体沿粗糙的水平面上由静止开始做直线运动已知物体与地面间的�擦力为10N物体运动的v T 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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在倾角为θ的光�斜面上有一轻质弹簧其一端固定在斜面下端的挡板上另一端与质量为m的物体接触物体静止时弹簧被压缩了x0．现用力F sketch template

如图所示．物体A放在某一水平面上已知物体A重80NA与水平面之间的动�擦因数为μ=03AB均处于静止状态绳AC水平绳CD与水平方� sketch template

如图所示原来静止的物体A在水平拉力F作用下沿水平面做直线运动速度逐渐增大则拉力FA．一定大于阻力Ff B．一定等于阻力Ff C sketch template

24．如图所示在倾角θ=37°的足够长的固定的斜面底端有一质量m=10kg的物体物体与斜面间动�擦因数µ =025现用轻细绳将物体由 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

20．如下图所示物体A重10N物体与竖直墙的动�擦因系数为0．4用一个与水平方�成37°角的力F作用在物体上要使物体A沿墙作匀速运动则 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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

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

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甲所示放在水平地面上的物体受到方�不变的水平拉力F的作用F的大小与时间t的关系如图乙所示物体运动的速度v与时间t的关系如图丙所示 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

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水平地面上的物体A在斜�上的拉力F的作用下�右做匀速直线运动则关于下列物体受力情况的说法中正确的是 A．物体A可能只受到二个 sketch template

如图所示放在水平面上的物体受到一个斜�上的拉力作用但物体仍保持静止状态现将F分解为水平方�的力F1和竖直�上的力F2下列说法不正确的是 sketch template

如图所示物体ABC叠放在水平桌面上水平力F作用于C物体上使ABC以共同速度v�右匀速运动且三者相对静止那么关于�擦力的说法 sketch template

如图所示一物体在水平力F1作用下在水平面上以速度v1匀速运动了位移xF1做的功为W1功率为P．若物体在斜�上的力F2作用下以速度v2 sketch template

如图所示物体A在水平拉力F的作用下沿水平面以2米/秒的速度匀速运动．此时弹簧测力计K示数为8牛若动�轮绳子弹簧测力计重力和�擦力均不计 sketch template

如图9所示在50N的水平拉力F作用下 重800N的物体沿水平地面做匀速直线运动 物体与地面间�动�擦力为120N则�轮组的机械效率为 sketch template

如图所示物体M受同一直线上的两个水平拉力作用静止在水平桌面上一下说法正确的是 A．物体M一定不受�擦力B．物体M可能受到水平�右的 sketch template

题目如图所示在水平拉力F的作用下物体沿水平面以速度v�右匀速运动了距离s若物体重力为G桌面对物体的�擦力为f下列说法正确的是 sketch template

如图所示物体在一个沿斜面的拉力F的作用下以一定的初速度沿倾角为30°的斜面�上做匀减速运动加速度的大小为a=3m/s2物体在沿斜面�上 sketch template

如图所示一个质量为m的物体放在倾角为θ的固定斜面上物体与斜面间的动�擦因数为μ．现对物体施一水平推力试分析设最大静�擦力等于�动�擦 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

如图所示用平行斜面�下的拉力F将一个物体沿斜面往下拉动拉力的大小等于�擦力则 A．物体做匀速运动 B．合力对物体所做的功等于零 C sketch template

如图所示物体在受到一水平�左的拉力F=6N作用下以v=4m/s的初速度沿水平面�右运动已知物体与水平面的动�擦因数μ=02物体质量m sketch template

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