Here's a breakdown:
* Force: A push or pull that can cause a change in an object's motion.
* Net force: The overall force acting on an object, considering all individual forces and their directions.
* Equilibrium: A state where the net force on an object is zero. This means all the forces acting on the object are balanced.
What happens when net force is zero?
* Object at rest: If an object is at rest and the net force is zero, it will remain at rest. This is due to Newton's First Law of Motion (Inertia).
* Object in motion: If an object is in motion and the net force is zero, it will continue moving at a constant velocity (same speed and direction).
Examples of equilibrium:
* A book resting on a table: The force of gravity pulling the book down is balanced by the normal force pushing the book up from the table.
* A car moving at a constant speed on a straight road: The force of the engine propelling the car forward is balanced by the forces of friction and air resistance.
Important Note: Equilibrium doesn't mean the object is stationary. It just means the net force is zero, allowing the object to maintain its current state of motion.
