\(fl=\left(100-12j+75k\right)lb\ f2=\left(-200i+250j+100k\right)lb\)
\(rA=\left(0i+0j+0k\right)\ rB\left(4i+5j+3k\right)\)
\(Mo=M1+M2=rAxF1+rBxF2\)
\(rA\ X\ F1=\)
\(I\ J\ K\)