1 . 已知力
与水平方向的夹角为
(斜向上),大小为
,一个质量为
的木块受力
的作用在动摩擦因数
的水平平面上运动了
.力
和摩擦力
所做的功分别为多少?(取重力加速度大小为
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4952c17fd21249b534ec98d8221f98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c4fa8939d0b45ea54b20bbfdca0424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61964ab960a18c9a7c757ddc4153472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c08094f72d5bd69246c453dd28e33d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf189a86ac788e61722281a7b1ed7b8e.png)
您最近一年使用:0次
2019-10-09更新
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471次组卷
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5卷引用:江苏省泰州市泰兴市第三高级中学虹桥校区2020-2021学年高一下学期3月月考数学试题