如图1所示,在倾角为
的斜面上分别静止着两个小物体
、
,质量分别为
、
,与斜面间的动摩擦因数分别为
、
,
和
受到的摩擦力大小分别为
和
,受到斜面的支持力大小分别为
和
。现在用沿斜面向上的拉力
分别作用在
、
上,它们的加速度
和
的关系图像如图2所示,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/1/16/2902945309278208/2904177367269376/STEM/df40309a-06f5-479d-90eb-62fdb0235bd6.png?resizew=348)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b915ea3069054b7389cee9827dd613c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55ec3fc6a2a218803229a6fe3ab2679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287adcb739a4890d108dd974358345fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2902945309278208/2904177367269376/STEM/df40309a-06f5-479d-90eb-62fdb0235bd6.png?resizew=348)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-01-28 13:46:53
|
【知识点】 牛顿运动定律与图像结合
相似题推荐
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适中
(0.65)
名校
【推荐1】将一小球竖直上抛,过一段时间小球回到抛出点。以向上为正方向,绘制出小球从抛出到回到抛出点(
时刻)的
图如图所示。小球运动过程中仅受重力和空气阻力。下列说法正确的有( )
![](https://img.xkw.com/dksih/QBM/2022/3/1/2934029118201856/2936293435342848/STEM/79773d92-a06a-416f-8028-4f9b8ce99cf6.png?resizew=186)
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A.小球上升过程所用时间为全过程所用时间的一半 |
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D.![]() |
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【推荐2】如图甲所示,粗糙斜面与水平面的夹角为
,质量为
的小物块受到一个沿斜面向上的恒定推力
作用,作用一段时间后撤去推力
,小物块能达到的最高位置为C点,小物块从A到C的
图像如图乙所示,
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2016/10/11/1575937508270080/1575937508638720/STEM/3d2632fb-693f-4018-a186-a81db7cbe63f.png?resizew=352)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be69e5ca2b46bc072244ef501b9dda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1552707683293dcf684d101dd09b5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a6a294d3d7206bcdde5b943dbe94f0.png)
![](https://img.xkw.com/dksih/QBM/2016/10/11/1575937508270080/1575937508638720/STEM/3d2632fb-693f-4018-a186-a81db7cbe63f.png?resizew=352)
A.小物块到C点后将沿斜面下滑 |
B.小物块加速时的加速度是减速时加速度的![]() |
C.小物块与斜面间的动摩擦因数为![]() |
D.推力F的大小为![]() |
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