(2013南通第一次调研).如图所示,一个表面光滑的斜面体M置于在

2013南通第一次调研)如图所示一个表面光滑的斜面体M置于在水平地面上它的两个斜面与水平面的夹角分别为aba <bM的顶端装有一定滑轮一轻质细绳跨过定滑轮后连接AB两个小滑块细绳与各自的斜面平行不计绳与滑轮间的摩擦,AB恰好在同一高度处于静止状态.剪断绳后,AB滑至斜面底端,M始终保持静止

A.滑块A质量大于滑块B质量

B.两滑块到达斜面底端时的速度相同

C.两滑块到达斜面底端时,A滑块重力的瞬时功率较大

D滑块AB下滑的过程中,斜面体受到水平向左的摩擦力

答案

答案:AD

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