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
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![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](/uploads/image/z/10655736-24-6.jpg?t=Give+two+eg+of+a+situation+in+which+the+normal+force+on+an+object+%27s+weight+.Then+give+an+eg+of+a+situation+in+which+there+is+NO+normal+force+on+an+object+.%E6%84%8F%E6%80%9D%E6%88%91%E4%B9%9F%E4%B8%8D%E6%B8%85%E6%A5%9A+%E8%83%BD%E8%A7%A3%E7%AD%94%E9%97%AE%E9%A2%98%E6%98%AF%E6%9C%80%E5%A5%BD%E4%B8%8D%E8%BF%87%E7%9A%84%E4%BA%86%E4%BC%9A%E5%A4%9A%E7%BB%99%E5%88%86+%E5%A6%82%E6%9E%9C%E6%B2%A1%E6%9C%89%E7%9A%84%E8%AF%9D%E9%82%A3)
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
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!
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
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