The theorem implies that the net work on a system equals the change in the quantity 1 2mv2 1 2 m v 2.
Work energy theorem physics.
Work is said to be done when an acting force displaces a particle.
The work energy theorem explains the reasons behind this physics of no work.
If there is no displacement there is no work done.
You will understand more of the physics in this interesting article after you finish reading angular momentum.
W refers to the work done by the force f.
This definition can be extended to rigid bodies by defining the work of the torque and rotational kinetic energy.
A force is said to do positive work if when applied the force has a component in the direction of the displacement of the point of application.
The principle of work and kinetic energy also known as the work energy theorem states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle.
In other words w is telling you the amount of energy that the force f is giving to the object.
The net work done by the forces acting on a particle is equal to the change in the kinetic energy of the particle.
The amount of energy transferred by a force is called the work done by that force.
The work energy theorem states that the net work done by the forces on an object equals the change in its kinetic energy.
If no displacement of the object occurs work is not done.
Thus the work energy theorem describes the reasons behind this physics of no work.
The formula to find the work done by a particular force on an object is w equals f d cosine theta.
Equation 4 is the mathematical representation of an important result called the work energy theorem which in words can be stated as follows.
In physics work is the process of energy transfer to the motion of an object via application of a force often represented as the product of force and displacement.
This expression is called the work energy theorem and it actually applies in general even for forces that vary in direction and magnitude although we have derived it for the special case of a constant force parallel to the displacement.