In the figure shown, the lines of action and moment arms of two forces about the origin O. Imagining these forces to be acting on a rigid body pivoted at O , all vectors shown being in the plane of the figure, the resultant torque will be

Q: In the figure shown, the lines of action and moment arms of two forces about the origin O. Imagining these forces to be acting on a rigid body pivoted at O , all vectors shown being in the plane of the figure, the resultant torque will be

Numerical

(a) (F2 r2 sin Ɵ2 – F1 r1 sin Ɵ1) out of plane of the page

(b) (F1 r1 sin Ɵ1 – F2 R2 sin Ɵ2) into plane of the page

(c) (F2 r2 sin Ɵ2 – F1 r1 sin Ɵ1) into plane of the page

(d) Zero

Ans: (a)