• 2022-07-26
    重力为P,半径为R的均质圆轮受力F作用,静止于水平面上,若静滑动摩擦因数为fs,动滑动摩擦因数为f,滚动摩阻系数为d,则圆轮受到的摩擦力和滚动摩阻力偶矩为()
    A: Fs = fsP;Mf = dP
    B: Fs = F;Mf = dP
    C: Fs = fP;Mf = FR
    D: Fs = F;Mf = FR