For an object at equilibrium :
.option D: It might be stationary.
.option E: Fnetx must be zero, Fnetx can be anything.
What is equilibrium?
This refers to a state in which an object is at rest or balanced to the equal action of opposing forces.
At equilibrium, in the presence of external forces, the opposite forces normally have a balanced effect on the object in concern. Objects at equilibrium are known for their stable nature in terms of motion and energy.
Conditions for equilibrium
.The object must have no acceleration.
.The total force acting on the body i.e the net force and the net torque on the object must be zero.
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