• 2022-11-03
    图示结构,其对A点之矩的平衡方程为( )。[img=192x150]180328f61d22d6f.png[/img]
    A: SMA(F) = m + P × L/2 + mA = 0
    B: SMA(F) = -m - P × L/2 = 0
    C: SMA(F) = -mL - P × L/2 + mA = 0 SMA(F) = -mL - P × L/2 + mA = 0
    D: SMA(F) = -m - P × L/2 + mA = 0