contact force
When one object applies a force to a second object, we call this force the action force.
This concept is known as Newton's third law of motion. It states that for every action, there is an equal and opposite reaction. In other words, when object A applies a force on object B, object B applies an equal force in the opposite direction on object A.
The object being moved by a lever is called the load. The lever itself applies a force to the load to move it.
A porter applies an upward force called the lifting force to lift an object. This force must be larger than the weight of the object to overcome gravity and lift it.
In science, work is defined as the result of a force acting over a distance. It is the transfer of energy from one object to another when the first object applies a force on the second object and that force causes the second object to move. Work is calculated as the product of the force applied and the distance over which the force is applied.
When one object applies a force to a second object, we call this force the action force.
reaction force
This concept is known as Newton's third law of motion. It states that for every action, there is an equal and opposite reaction. In other words, when object A applies a force on object B, object B applies an equal force in the opposite direction on object A.
The object being moved by a lever is called the load. The lever itself applies a force to the load to move it.
The first one sets the system of coordinates (inertial). The second one gives connection between the net force and the acceleration. The third one postulates than if a first object applies some force F to a second object. The second object is applying the same force F to the first object.
A porter applies an upward force called the lifting force to lift an object. This force must be larger than the weight of the object to overcome gravity and lift it.
In science, work is defined as the result of a force acting over a distance. It is the transfer of energy from one object to another when the first object applies a force on the second object and that force causes the second object to move. Work is calculated as the product of the force applied and the distance over which the force is applied.
Newton's third law states that for every action, there is an equal and opposite reaction. The object to which the force is exerted is called the "second object" or "object experiencing the force."
The effort or input force is the part of a lever that applies the force to move an object.
see Newton's Laws of Motion
The total force acting on an object is called the net force. It is the vector sum of all the forces acting on the object. The net force determines the object's acceleration according to Newton's second law of motion.
The effort or input force applied to a lever is the part that applies force to an object. It is typically exerted on one end of the lever to move the load at the other end.