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如图1所示,游乐场的过山车可以底朝上在圆轨道上运行,游客却不会掉下来.我们把这种情形抽象为如图2所示的模型:弧形轨道的下端与半径为R的竖直圆轨道相接,B、C分别为圆轨道的最低点和最高点.质量为m的小...
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2019年6月29日首个江南文化特色的无锡融创乐园隆重开园.其中有一座飞翼过山车它是目前世界最高最
2019年6月29日首个江南文化特色的无锡融创乐园隆重开园.其中有一座飞翼过山车它是目前世界最高最
在轨道上运行的游乐设施如等一般都设有刹车装置
疯狂老鼠
赛车
过山车
滑行龙
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.
如图所示小明和妈妈来到游乐场乘坐过山车工作人员首先需要用电动机将过山车牵引到最高点电能属于_____
过山车是游乐场中常见的设施下图是一种过山车运行轨道的简易模型它由竖直平面内粗糙斜面轨道和光滑圆形轨道
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
游乐场的过山车可以底朝上在轨道上运行游客却不会掉下来.我们可把过山车抽象成如图所示模型弧形轨道的下
如图1所示游乐场的过山车可以底朝上在圆轨道上运行游客却不会掉下来.我们把这种情形抽象为如图2所示的
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.
如图所示为游乐场中过山车的一段轨道P.点是这段轨道的最高点
B.C.三处是过山车的车头、中点和车尾。假设这段轨道是圆轨道,各节车厢的质量相等,过山车在运行过程中不受牵引力,所受阻力可忽略。那么过山车在通过P.点的过程中,下列说法正确的是
A.车头A.通过P.点时的速度最小
车的中点B.通过P.点时的速度最小
车尾C.通过P.点时的速度最小
A.B.C.通过P.点时的速度一样大
游乐场的过山车可以底朝上在圆轨道上运行游客却不会掉下来如图1.我们把这种情况抽象为图2的模型弧形轨
游乐场的过山车可以底朝上在圆轨道上运行游客却不会掉下来如图甲.我们可以把它抽象成图乙所示的由曲面轨
夏季游乐场的飞舟冲浪项目受到游客的欢迎简化模型如图一游客可视为质点以某一水平速度v0从
点出发沿光滑圆轨道运动,至
点时脱离轨道,最终落在水面上的
点,不计空气阻力.下列说法中正确的是
A.在A.点时,游客对圆轨道压力等于其重力 B.在B.点时,游客的向心加速度为g C.B.到C.过程,游客做变加速运动
A.到B.过程,游客水平方向的加速度先增加后减小
某游乐场的过山车从较高的弧形轨道顶部由静止开始向下运动在底部进入与之连接的圆形轨道它可以底朝上在竖
夏季游乐场的飞舟冲浪项目受到游客的欢迎简化模型如图一游客可视为质点以某一水平速度v0从
点出发沿光滑圆轨道运动,至
点时脱离轨道,最终落在水面上的
点,不计空气阻力.下列说法中正确的是( )
A.在A.点时,游客对圆轨道压力等于其重力B.在B.点时,游客的向心加速度为gC.B.到C.过程,游客做变加速运动
A.到B.过程,游客水平方向的加速度先增加后减小
12分游乐场的过山车可以底朝上在圆轨道上运行游客却不会掉下来如图甲我们可以把它抽象成图乙所示的由曲面
如图7所示为某游乐场的过山车的轨道竖直圆形轨道的半径为R.现有一节车厢可视为质点从高处由静止滑下不计
游乐场的过山车可以底朝上在圆轨道上运行游客不会掉下来.我们把这种情形抽象为如图所示的模型弧形轨道的
图甲是游乐场的过山车图乙是过山车的模型光滑圆形轨道竖直放置下端与光滑弧形轨道相接让小球从弧形轨道上
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