(01年津晋卷)如图所示,在一粗糙水平面上有两个质量分别为m1和m2

01年津晋卷)如图所示,在一粗糙水平面上有两个质量分别为m1m2的木块12,中间用一原长为l、劲度系数为K的轻弹簧连接起来,木块与地面间的滑动摩擦因数为μ。现用一水平力向右拉木块2,当两木块一起匀速运动时两木块之间的距离是

A.        B.

 

C.        D.

答案

答案A

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