2016 National Question 1 Single-choice Differentiating 2016_新课标II Paper 1.(6分)质量为m的物体用轻绳AB悬挂于天花板上。用水平向左的力F缓慢拉动绳的中点O,如图所示。用T表示绳OA段拉力的大小,在O 点向左移动的过程中( ) A. F逐渐变大,T逐渐变大B. F 逐渐变大,T逐渐变小C. F 逐渐变小,T 逐渐变大D. F逐渐变小,T逐渐变小 Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →