名校
1 . 如图所示的轨道由倾角
的AB段、圆弧轨道BC、水平轨道CD、圆轨道以及水平轨道DF组成,将一质量为m、可视为质点的物块由轨道A点无初速释放,经过一段时间物块可由D点进入竖直的圆轨道。已知物块与轨道AB、CD、DF段的动摩擦因数均为
,其余部分的摩擦力均可忽略不计。
、
,BC两点的高度差为0.4L,重力加速度为g,
,
。求:
(1)物块第一次运动到C点时对轨道的压力大小为多大?
(2)欲使物块不离开竖直圆轨道,则圆轨道的半径
应满足什么条件?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912b6b14c72a43003dd0919636f8c272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f881cb9071ca8fea7cef4ab8d4865589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8201130afbd02f4f1397f83c973c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ee41df00e4553a59146b72c5172d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f986badfc5dea707c164e2ab6c98dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8485466d2127bd681a322f87c58f86.png)
(1)物块第一次运动到C点时对轨道的压力大小为多大?
(2)欲使物块不离开竖直圆轨道,则圆轨道的半径
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20ae0b7d608dc671c2e8a721cdc09f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/b11d7f1f-d9ee-4d6c-ad7a-b08a5fee6b8b.png?resizew=300)
您最近一年使用:0次
2022-06-23更新
|
236次组卷
|
2卷引用:陕西省安康中学2021-2022学年高一下学期第二次月考物理试题
2 . 如图所示,光滑圆弧的圈心为
,半径
,圆心角
,
为圆弧的最低点,
处切线方向水平,与一足够长的水平面相连.从
点水平抛出一个质量为
的小球,恰好从光滑圆弧的
点的切线方向进入圆弧,进入圆弧时无机械能损失.小球到达圆弧的最低点
时对轨道的压力为
,小球离开
点进入水平面,小球与水平面间的动摩擦因数为
.(不计空气阻力,
取
,
,
),求:
![](https://img.xkw.com/dksih/QBM/2018/7/11/1986108373245952/null/STEM/69a7216165e9463bb26ea16a98e44679.png?resizew=258)
(1)小球到达圆弧
点速度的大小;
(2)小球做平抛运动的初速度
;
(3)小球在水平面上还能滑行多远.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28096030fbe601c7e3a8fb90c88cd00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d74385d61332244e69db39a0a998a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9eddbb3976e0c4381ea3f152e1cab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc01f7dd616411c13ae1b7d202f1e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f87db64548beca1d86d77b1aa663b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887cb7ae599f99926982163378c859b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957531f27714e23e04113cf85862a731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafb2aa0a10c5ad2c011241ad17c2e65.png)
![](https://img.xkw.com/dksih/QBM/2018/7/11/1986108373245952/null/STEM/69a7216165e9463bb26ea16a98e44679.png?resizew=258)
(1)小球到达圆弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)小球做平抛运动的初速度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb979056b1817d3bc4f7904ee26dc98.png)
(3)小球在水平面上还能滑行多远.
您最近一年使用:0次
14-15高三上·广东·期中
名校
3 . 如图所示,倾斜轨道
的倾角为
,
、
轨道水平,
与
通过光滑圆弧管道
连接,
右端与竖直光滑圆周轨道相连。小球可以从
进入该轨道,沿轨道内侧运动,从
滑出该轨道进入
水平轨道。小球由静止从
点释放,已知
长为
,
长为
,重力加速度为
,小球与斜轨
及水平轨道
、
的动摩擦因数均为
,
,
,圆弧管道
入口
与出口
的高度差为
。求:
在运算中,根号中的数值无需算出![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)小球滑到斜面底端
时速度的大小;
(2)小球刚到
时对轨道的作用力;
(3)要使小球在运动过程中不脱离轨道,竖直圆周轨道的半径
应该满足什么条件?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da080fd41cf18224a1b4433e5d3a2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b522cff82a7c4169c9b898d26956f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135585680f39a0765c519616f61c4d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58221e12691cb48d9d2ee9b0dd5239b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2daf94ff687603f1fe72e050e2de00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)小球滑到斜面底端
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)小球刚到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)要使小球在运动过程中不脱离轨道,竖直圆周轨道的半径
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4f56e718acdba57765cbb1be8d14b5.png)
![](https://img.xkw.com/dksih/QBM/2015/10/22/1575774064852992/1575774065246208/STEM/ca60bd16-ab14-4741-a33d-dfca05b62057.png?resizew=197)
您最近一年使用:0次
2016-12-08更新
|
678次组卷
|
11卷引用:陕西省平利县中学2019届高三上学期第三次月考物理试题
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