What are the two conditions necessary for equilibrium regarding torque?

To achieve equilibrium in terms of torque, an object must satisfy two key conditions. First, the net force acting on the object must be zero. This ensures that there are no unbalanced forces causing the object to accelerate linearly. Second, the sum of all the torques acting on the object must also be zero. Torque, being the rotational equivalent of force, must balance out, so that there are no unbalanced torques causing the object to rotate.

When both these conditions are met, the object can be considered to be in a state of equilibrium, meaning it will either remain at rest or move at a constant velocity without any rotation. Hence, the correct answer highlights the necessity of both Fnet being zero and the sum of the torques being zero for an object to be in equilibrium.