均质细杆AB重P,长2L,A端铰支,B端用绳系住,处于水平位置,如图所示。当B端绳突 发布时间:2018-11-25 13:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 均质细杆AB重P,长2L,A端铰支,B端用绳系住,处于水平位置,如图所示。当B端绳突然被剪断瞬时,杆AB的角加速度大小为,则A处的约束力大小为()。A.AB.BC.CD.D
题型:单项选择题 -______________? -It doesn't work. [ ]A. How are youB. Are there anything wrong with your watch .C. What's wrong with your watchD. How much is your watch 查看答案