An object, made from two equal masses joined by a light rod, falls with uniform speed through air. The rod remains horizontal. Which statement about the equilibrium of the system is correct?
It is not in equilibrium because it is falling steadily.
It is not in equilibrium because it is in motion.
It is not in equilibrium because there is a resultant torque.
It is in equilibrium because there is no resultant force and no resultant torque.
