黑龙江省哈尔滨市哈尔滨师范大学附属中学2023-2024学年高三上学期第三次调研考试(11月期中)物理
哈师大附中2021级高三第三次调研考试物理试题一、选择题:本题共10小题,共46分。在每小题给出的四个选项中,第1~7题只有一项符合题目要求,每小题4分;第8~10题有多项符合题目要求,每小题6分,全部选对的得6分,选对但不全的得3分,有选错的得0分。1.如图所示,质量均为m的物块a、b之间用竖直轻弹簧相连,系在a上的细线竖直悬挂于固定点O,a、b与竖直粗糙墙壁接触,整个系统处于静止状态。重力加速度大小为g,则( )A.弹簧弹力可能小于mgB.细线的拉力可能等于mgC.剪断细线瞬间物块b的加速度大小为gD.剪断细线瞬间物块a的加速度大小为2g2.一可视为质点的小球在水平面上由静止开始做匀加速...
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