A force vec(F)=Ahat(i)+Bhat(j) acts at a point whose radius vector w.r.t origin is rahat(i)+bhat(j), where a,b, A and B are constant and gt are unit vector along X and Y axes then :

A force vec(F)=Ahat(i)+Bhat(j) acts at a point whose radius vector w.r

1.	A force vec(F)=Ahat(i)+Bhat(j) acts at a point whose radius vector w.r.t origin is rahat(i)+bhat(j), where a,b, A and B are constant and gt are unit vector along X and Y axes then :
Answer» Torque about O is `(aB-bA)HAT(K)` Arm of force `(aB+bA)/(sqrt(A^(2)+B^(2))` about ORIGIN Torque abot O is zero Torque about O is `(aB+bA)hat(k)` ANSWER :A::B