An object is said to be in equilibrium when two opposing forces acting upon it create a resultant force of 0.
Example:
A car is sitting on a road. The force of gravity pushes the car downward, while an opposing force pushes it upward. This causes an equilibrium, and therefore the car does not move as a result of these two opposing forces.
It can be in equilibrium if in constant motion (constant velocity) as no forces are acting on it (no acceleration)
The concept of acceleration was first developed by Galileo Galilei, an Italian scientist, in the 17th century. He studied the motion of objects and formulated the laws of motion that describe how objects move and accelerate.
The concept of force was first described by Sir Isaac Newton in his laws of motion in the 17th century. Newton's laws of motion laid the foundation for understanding the relationship between force, mass, and acceleration.
D'Alembert's principle reformulates Newton's laws of motion by incorporating the concept of virtual work, allowing for the analysis of dynamic systems in equilibrium. While Newton's laws focus on the forces acting on a body to determine its motion, D'Alembert's principle introduces the idea of inertia as a force, enabling the treatment of dynamics problems similarly to statics. Essentially, D'Alembert's principle provides a more generalized approach to mechanics, particularly useful in complex systems.
If it remains at constant speed then it can be considered to be in equilibrium.
the laws of motion the laws of motion
The velocity or motion .
The concept of balanced and unbalanced forces was discovered by Sir Isaac Newton in his groundbreaking work on the laws of motion. Newton formulated the laws of motion, including the concept of balanced and unbalanced forces, in his work "Mathematical Principles of Natural Philosophy" published in 1687.
Newton's First law of motion states that everybody continues or tends to be in its state of rest, or of uniform motion, unless it is compelled to change that state by force impressed on it.
The term for the concept where the net forces acting on an object equal zero is called "equilibrium." This means that the forces are balanced, resulting in no change in the object's overall state of motion.
There are two main explanations for force and motion: Newton's laws of motion and the concept of conservation of momentum. Newton's laws describe how forces interact with objects to produce motion, while the conservation of momentum states that the total momentum of a closed system remains constant unless acted upon by an external force.
Newton's laws of motion constituted a paradigm shift because they provided a new way of understanding the motion of objects in the universe based on observable evidence and mathematical principles. The laws introduced the concept of inertia, explained how forces affect motion, and established a framework for predicting and describing the behavior of physical systems. They revolutionized scientific thinking by replacing the Aristotelian view of motion with a more systematic and quantitative approach.