4．如右图所示质量为m的物体用细绳经过光�小孔牵引在光�水平面上做匀速圆�运动拉力为某个值f时转动半径为r当拉力逐渐减小到f4时 Sketch Coloring Page

4．如右图所示质量为m的物体用细绳经过光�小孔牵引在光�水平面上做匀速圆�运动拉力为某个值f时转动半径为r当拉力逐渐减小到f4时 Template

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tomski4．如右图所示质量为m的物体用细绳经过光�小孔牵引在光�水平面上做匀速圆�运动拉力为某个值f时转动半径为r当拉力逐渐减小到f4时 coloring

如图4 21所示质量为m的物体沿半径为R的圆轨道自A点�下�至B点时的速度为v已知物体与轨道间的动�擦因数为μ求物体在B点所受的�擦 sketch template

如图所示，用三根轻绳将质量为m的物块悬挂在空中。已知ac和bc与竖直方�的夹角分别为30°和60°，重力加速度为g。请选择合适的研究对象，画出 sketch template

$如图所示为一质量为M的球形物体密度均匀半径为R在距球心为2R处有一质量为m的质点若将球体挖去一个半径为$frac{R}{2}$的小球 sketch template$

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质量分别为mA和mB的物体AB用细绳连接后跨过�轮A静止在倾角为45°的斜面上．已知mA＝2mB不计�轮�擦现将斜面倾角由 sketch template

如图所示用细绳一端系着的质量为M=06kg的物体A静止在水平转盘上细绳另一端通过转盘中心的光�小孔O吊着质量为m=03kg的小球BA sketch template

如图所示质量为m=02kg的小球固定在长为L=09m的轻杆一端杆可绕O点的水平转轴在竖直平面内转动．g=10m/s2求1当小球 sketch template

3．如图所示质量为m的物体由静止开始从倾角分别为αβ的两个光�固定斜面上�下两斜面的高度均为h则下列叙述正确的是 A．物体�到 sketch template

如图6 3所示质量为M的木块静止在光�的水平面上墙上水平固定一轻弹簧质量为m的子弹以水平速度v0击中木块并留在其中木块撞击弹簧后又被弹 sketch template

4．如右图所示质量为m的物体用细绳经过光�小孔牵引在光�水平面 上做匀速圆�运动拉力为某个值F时转动半径为R当拉力逐渐减小 到F/4时 sketch template

题目如图所示质量为m的小球用一细线悬挂在天花板上现用一大小恒定的外力慢慢将小球拉起在小球可能的平衡位置中细线与竖直方�的最大偏角 sketch template

如图所示质量为m的小球系于长L=08m的轻绳末端绳的另一端系于O点将小球移到轻绳水平的位置后释放小球�到最低点A时恰与原静止于水平 sketch template

题目如图所示质量为m=2 Kg的木块在倾角θ=37°的斜面上由静止开始下�木块与斜面间的动�擦因数为μ=05已知sin 37 sketch template

关于角动量的基础例题（浅学版）知乎 sketch template

小明同学在探究重力势能的大小与什么因素有关时，提出了如下猜想：猜想一：物体的重力势能与物体的质量有关猜想二：物体的重力势能与物体所在高度有关 sketch template

如图所示质量为m的小球从离心轨道上由静止开始无�擦�下后进入竖直面内的圆形轨道圆形轨道的半径为R求 1要使小球能通过圆形轨道的最高 sketch template

$如图所示质量为m的小球用长为L的悬线固定于O点在O点正下方$frac{L}{2}$处钉一个钉子把悬线拉直与竖直方�成一定角度由静止 sketch template$

如图所示质量为m的物体放在一固定斜面上当斜面倾角为θ=30°时恰能沿斜面匀速下�．重力加速度为g．1物体与斜面间的动�擦因数μ2 sketch template

如图所示地面上有一固定的斜面体ABCD其AB边的长度S=2m斜面倾角为37°．光�水平地面上有一块质量M=3Kg的足够长的木板紧挨着斜面 sketch template

如图所示质量为m的物体放在一固定斜面上当斜面倾角为θ=30°时恰能沿斜面匀速下�．重力加速度为g．1物体与斜面间的动�擦因数μ2 sketch template

如图所示质量为m的小球被水平绳AO和与竖直方�成θ角的轻弹簧系着处于静止状态现用火将绳AO烧断在绳AO烧断的瞬间下列说法正确的是 sketch template

如右图所示光�匀质圆球的直径d=40cm质量为M=20kg悬线长L=30cm方形物块A的厚度b=10cm质量为m=2kg物块A与墙 sketch template

如图所示质量为m的小球置于正方体的光�盒子中盒子的边长略大于球的直径．某同学拿着该盒子在竖直平面内做半径为R的匀速圆�运动已知重力加速度 sketch template

如图所示，竖直平面内有一半径为R的半圆形光�绝缘轨道，其底端B与光�绝缘水平轨道相切，整个系统处在竖直�上的匀强电场中，一质量为m，带正电的 sketch template

如图所示两光�斜面的倾角分别为30°和45°质量分别为2m和m的两个�块用不可伸长的轻绳通过�轮连接分别置于两个斜面上并由静止释放若 sketch template

如图所示质量为m的小球用一根细线悬挂在O点用一个水平力作用在小球上使细线与竖直方�成30°角时小球静止求1水平拉力的大小．2 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质量为m的小球置于正方体的光�盒子中盒子的边长略大于球的直径．某同学拿着该盒子在竖直平面内做半径为R的匀速圆�运动已知重力加速度 sketch template

9．如图所示质量为M的光�半圆槽置于光�水平地面上质量为m的物块沿半圆槽从静止开始�下则物块在半圆槽内�动的——青夏教育精英家教�—— sketch template

如图所示AB两物体用细绳相连跨过光��轮悬挂起来B物体放在水平地面上AB两物体均静止现将B物体稍�左移一点AB两物体仍静止则 sketch template

如图所示为半径是r密度是ρ的某星球表面某处竖直平面内的一段轨道AB是倾角为θ的粗糙直轨道BCD是光�的圆弧轨道AB恰好在B点与圆弧相切 sketch template

如图甲所示质量为m = 05kg初速度v0= 10 m/s的物体受到一个与初速度v0方�相反的外力F作用沿粗糙的水平面�动物体与 sketch template

如图所示边长为L的正方形导线框质量为m由距磁场H高处自由下落其下边ab进入匀强磁场后线圈开始做减速运动直到其上边cd刚刚穿出磁场时 sketch template

如图所示质量为m边长为L的正方形线框从某一高度自由落下后通过一高度也为L的匀强磁场区域．则线框通过磁场过程中产生的焦耳热 A．可能 sketch template

15．如图质量为m的物体A放置在质量为M的物体B上B与弹簧相连．它们一起在光�水平面上作简谐振动．振动过程中AB之间无相对运动．设弹簧的劲 sketch template

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