高等继续教育 / 工程力学
正确率:100%
题型描述: 单选题
B.mx(F)=0,my(F)=Fa,mz(F)=0
C.mx(F)=0,my(F)=0,mz(F)=0
D.mx(F)=Fa,my(F)=Fa,mz(F)=Fa
如图,边长为a的正方体的棱边AB和CD上作用着大小均为F的两个方向相反的力,则二力对x、y、z三轴之矩大小为 ( )
A.mx(F)=Fa,my(F)=0,mz(F)=0
B.mx(F)=0,my(F)=Fa,mz(F)=0
C.mx(F)=0,my(F)=0,mz(F)=0
D.mx(F)=Fa,my(F)=Fa,mz(F)=Fa
参考答案: