图4所示某平面平衡力系作用在平面Oxy内,问下述哪组方程是该力系的独立平衡方程() A、∑MA (F)=0,∑MB (F)=0,∑MC (F)=0 B、∑MA (F)=0,∑MB (F)=0,∑Mo (F)=0
A.∑Fx=0,∑Fy=0,∑FAB=0 B.∑MA C.=0,∑Mo D.=0,∑Fy=0正确答案B
图4所示某平面平衡力系作用在平面Oxy内,问下述哪组方程是该力系的独立平衡方程() A、∑MA (F)=0,∑MB (F)=0,∑MC (F)=0 B、∑MA (F)=0,∑MB (F)=0,∑Mo (F)=0
A.∑Fx=0,∑Fy=0,∑FAB=0 B.∑MA C.=0,∑Mo D.=0,∑Fy=0正确答案B