Final answer:
The net force on an object in either static or dynamic equilibrium is zero.
Step-by-step explanation:
The net force on an object in either static or dynamic equilibrium is a) Zero. In static equilibrium, the object is at rest and the forces on the object are balanced, resulting in a net force of zero. In dynamic equilibrium, the object is moving at a constant velocity, and once again, the forces on the object are balanced, leading to a net force of zero.