Five forces act on a rod that is free to pivot at point P,as shown in the figure.Which of these forces is producing a counter-clockwise torque about point P? (There could be more than one correct choice. )
A)force A
B)force B
C)force C
D)force D
E)force E

Question

Five forces act on a rod that is free to pivot at point P,as shown in the figure.Which of these forces is producing a counter-clockwise torque about point P? (There could be more than one correct choice. ) 
A)force A 
B)force B 
C)force C 
D)force D 
E)force E

Quizplus · Accepted Answer

The direction of torque is given by the cross product of the force and the vector from the pivot point to the point where the force is applied. Force C acts perpendicular to the vector from P to its point of application, creating a counter-clockwise torque about point P.

Five Forces Act on a Rod That Is Free to Pivot