Give two eg of a situation in which the normal force on an o

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/15 05:00:33

Give two eg of a situation in which the normal force on an object 's weight .Then give an eg of a situation in which there is NO normal force on an object .
意思我也不清楚能解答问题是最好不过的了会多给分如果没有的话那帮我翻译下我也给分的昂不许用谷歌等机械翻译!

结合图,这道题的原意是 ‘这个物体重150N,没有外力作用’ 并没问问题.但猜测问的应该是木块静止时倾斜角的大小,因为只有这一个未知量.临界角时μ=tanθ=0.30 ,θ=arctan0.30.楼主这题是原题吗感觉好像只是说到一半似的
再问：我错了真心错了...我没有仔细看题不要看图了图和题目无关...我把下面一题的图给当成了这题的配图~~ = -求高手解答（只看英文...不要看图 T T~）
再答：是不这道题是不也应该有一个图呀？或者你发的英文只是原题的一部分额
再问：这道题没图..别的高手说这题的意思是：举两个加在物体重量上的正常力的例子，然后给出一个没有加在物体上的正常力的例子
再答：不好意思了，我也不明白。

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