Work Energy Principle Equation

If there s no friction or another nonconservative force then me1 me2 or these equations represent the principle of conservation of mechanical energy.

Work energy principle equation.

Work energy theorem equation we consider not the work done on a particle by a single force but the net work w net done by all the forces that act on the particle there are two ways to find the net work. The work energy principle states that an increase in the kinetic energy of a rigid body is caused by an equal amount of positive work done on the body by the resultant force acting on that body. The amount of energy transferred by a force is called the work done by that force. Note that the work in this equation is the work done by the net force rather than the work done by an individual force.

The principle says that if the net work done by nonconservative forces is zero the total mechanical energy of an object is conserved. 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. The work energy principle there is a strong connection between work and energy in a sense that when there is a net force doing work on an object the object s kinetic energy will change by an amount equal to the work done. The first is to find the net force that is the vector sum of all the forces that act on the particle.

W refers to the work done by the force f. Conversely a decrease in kinetic energy is caused by an equal amount of negative work done by the resultant force. That is it doesn t change. This fact is referred to as the work energy principle and is often a very useful tool in mechanics problem solving.

This definition can be extended to rigid bodies by defining the work of the torque and rotational kinetic energy.