What is equilibrium? when there are no forces when all forces acting on an object remain the same when an object does not move when the forces acting on an object change
The Correct Answer and Explanation is:
Correct answer: When all forces acting on an object remain the same.
Explanation:
Equilibrium refers to a state in which all the forces acting on an object are balanced. This means the sum of the forces equals zero. When an object is in equilibrium, it either remains at rest or moves at a constant velocity. In both cases, there is no net force acting on it.
There are two types of equilibrium: static and dynamic. Static equilibrium occurs when an object is at rest and all forces acting on it are balanced. For example, a book resting on a table is in static equilibrium. The force of gravity pulling the book downward is exactly balanced by the support force of the table pushing upward.
Dynamic equilibrium happens when an object is moving at a constant velocity in a straight line, with all forces still balanced. An example is a car traveling at a steady speed on a straight road. Even though it is moving, the forces such as the engine’s thrust and air resistance are equal in magnitude and opposite in direction, resulting in no net force.
It is important to understand that equilibrium does not mean there are no forces acting on the object. Instead, it means that the forces are equal in size and opposite in direction, canceling each other out. If the forces become unbalanced, the object will accelerate in the direction of the net force, and it will no longer be in equilibrium.
So, equilibrium is best described as a condition where all the forces acting on an object remain the same and are balanced. This balance keeps the object either still or moving at a constant speed in a straight line.
