• 2022-06-04
    图中所示均质圆轮质量为m,沿斜面无滑动地滚动,质心速度为vc。则圆轮对O点的动量矩为( )。[img=264x165]17e0b60ad275246.png[/img]
    A: 7mRvc/2;
    B: 5mRvc/2
    C: 3mRvc/2;
    D: 1mRvc/2