如图所示小球沿轨道由静止从a处运动到d处的过程中忽略空气阻力和�擦力仅有动能和势能互相转化．则 A．小球在a处的动能等于在d处的动能 b Sketch Coloring Page

如图所示小球沿轨道由静止从a处运动到d处的过程中忽略空气阻力和�擦力仅有动能和势能互相转化．则 A．小球在a处的动能等于在d处的动能 b Template

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tomski如图所示小球沿轨道由静止从a处运动到d处的过程中忽略空气阻力和�擦力仅有动能和势能互相转化．则 a．小球在a处的动能等于在d处的动能 b coloring

12．如图所示一个小球从H=12m 高处由静止开始通过光�弧形轨道AB进入半径R=4m的竖直圆环圆环动�擦因数处处相等当小球沿BEC sketch template

如图所示小球沿轨道由静止从A处运动到D处的过程中忽略空气阻力和�擦力仅有动能和势能互相转化．则 A．小球在A处的动能等于在D处的动能 B sketch template

如图所示是演示动能和势能相互转化的实验装置．小球从轨道上的E点滚落下来在圆形轨道上运动了一�最后经过H点被抛出去在整个过程中小球的 sketch template

游乐场的过山车的运行过程可以抽象为如图所示的模型．弧形轨道的下端与圆轨道相接使小球从弧形轨道上端A点静止�下进入圆轨道后沿圆轨道运动最后 sketch template

如图所示两个34圆弧轨道固定在水平地面上半径R相同A轨道由�属凹槽制成B轨道由�属圆管制成均可视为光�轨道．在两轨道右侧的正上方分别 sketch template

如图所示的装置是在竖直平面内放置光�的绝缘轨道处于水平�右的匀强电场中一带负电荷的小球从高h的A处静止开始下�沿轨道ABC运动后进入圆环 sketch template

如图所示半径为R的四分之三光�圆轨道竖直放置CB是竖直直径A点与圆心等高有小球b静止在轨道底部小球a自轨道上方某一高度处由静止释放自 sketch template

$如图所示位于竖直平面内光�的$frac{1}{4}$圆弧轨道半径为R轨道的最低点B的切线沿水平方�．质量为m的小球从轨道最上端A点由静止 sketch template$

百度教育 sketch template

如图所示半径为R的光�圆形轨道固定在竖直面内小球 AB质量分别为mβmβ为待定系数A球从左边与圆心等高处由静止开始沿轨道下� sketch template

4．如图所示光�水平面上小球在拉力作用下做匀速圆�运动．若小球运动到点时拉力�生变化关于小球运动情况的说法正确的是 A．若拉力 sketch template

小球运动规律 sketch template

$如图所示M为固定在水平桌面上的有缺口的方形木块abcd为半径是R的$frac{3}{4}$光�圆弧形轨道a为轨道最高点de面水平且有 sketch template$

1．如图所示竖直平面内的轨道由轨道AB和圆弧轨道BC组成小球从斜面上A点由静止开始�下�到斜面底端后又�上一个半径为R的圆轨道1若 sketch template

如图所示半径为R的四分之一圆弧形光�轨道竖直放置圆弧最低点B 与长为L的水平桌面相切于B点BC离地面高为h可视为质点的质量为m的�块从 sketch template

如图所示一小球从弧形槽上的A点静止释放小球沿弧形槽滚至另一端的最高点为C点试作出由A点滚至C点过程中小球在B点即弧形槽底部与水平面的 sketch template

如图所示竖直放置的光�圆轨道被固定在水平地面上半径r=04m在最低点处有一小球其半径远小于轨道半径r现给小球以水平�右的初速度 sketch template

如图所示一质量为m的小球从半径为R的竖直四分之一圆弧轨道的顶端无初速释放圆弧轨道的底端水平离地面高度为R。小球离开圆弧轨道的底端又通过 sketch template

如图所示光�水平面AB与竖直面内的半圆形导轨在B点衔接导轨半径为R一个质量为m的小球将弹簧压缩至A处．小球从A处由静止释放被弹开后经过 sketch template

如图所示位于竖直平面上的1/4圆弧光�轨道半径为ROB沿竖直方�圆弧轨道上端A点距地面高度为H质量为m的小球从A点静止释放球达B点 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为半径很大的光�圆弧轨道上的一小段小球B静止在圆弧轨道的最低点O处另有一小球A自圆弧轨道上C处由静止滚下经过时间t 与B�生正碰 sketch template

如图所示小球由静止开始沿光�的斜面下�经过BC两位置时具有相同的 A．速度B．动能C．重力势能D．机械能题目和参考答案——青夏教育 sketch template

如图所示一根轻杆的一端以O点为固定转轴另一端固定一个小球小球以O点为圆心在竖直平面内沿顺时针方�做匀速圆�运动当小球运动到图中位置时 sketch template

如图所示在竖直平面内固定有两个很靠�的同心圆轨道AB分别为最高点和最低点外圆光�内圆粗糙．一质量为m=02kg的小球从轨道的最低点以 sketch template

如图所示小球自高为H的A点由静止开始沿光�曲面下�到曲面底B点飞离曲面B点处曲面的切线沿水平方�．若其他条件不变只改变h则小球的水平 sketch template

如图甲所示轻杆一端固定在O点另一端固定一小球现让小球在竖直平面内做半径为R的圆�运动小球运动到最高点时杆与小球间弹力大小为F小球在 sketch template

如图所示半径为R的光�圆环固定在竖直平面内ABCD是圆环相互垂直的两条直径CD两点与圆心O等高．一个质量为m的光�小球套在圆环上一 sketch template

如图所示在同一竖直面内小球ab从高度不同的两点分别以初速度Va和Vb沿水平方�抛出经过时间ta和tb后落到与两抛出点水平距离相等的P sketch template

如图所示，固定在水平面上的光�半球，球心O的正上方固定一个小定�轮，细绳一端拴一小球，小球置于半球面上的A点，另一端绕过定�轮，如图所示。今 sketch template

如图斜面体A静置于粗糙水平面上被一轻绳拴住的小球B置于光�的斜面上轻绳左端固定在竖直墙面上P处此时小球静止且轻绳与斜面平行．现将轻绳 sketch template

如图所示1小球沿斜面�下滚动，请在图中画出小球对斜面的压力的示意图； 2小球挂在竖直墙壁保持静止，请在图中画出小球受到的墙壁支持力示意 sketch template

如图所示小球沿水平面冲上一竖直面内光�的半圆形轨道轨道半径为R小球在轨道的最高点对轨道压力等于小球的重力问1小球离开轨道最高点后落 sketch template

如图所示在竖直平面有一个光�的圆弧轨道MN其下端与表面粗糙的水平传送带左端相切轨道N端与传送带左端的距离可忽略不计．当传送带不动时将一 sketch template

如图所示倾斜轨道AC与有缺口的圆轨道BCD相切于C圆轨道半径为R两轨道在同一竖直平面内D是圆轨道的最高点缺口DB所对的圆心角为90 sketch template

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