图示的力分别对x、y、z三轴之矩为()


图示的力分别对x、y、z三轴之矩为()

A.mx(F)=-3P,my(F)=-4P,mz(F)=2.4P;

B.mx(F)=3P,my(F)=0,mz(F)=-2.4P;

C.mx(F)=-3P,my(F)=4P,mz(F)=0;

D.mx(F)=3P,my(F)=4P,mz(F)=-2.4P;

正确答案:A


Tag:图示 时间:2023-01-10 14:51:21