Work Energy Principle Equation

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.

Work energy principle equation. Conversely a decrease in kinetic energy is caused by an equal amount of negative work done by the resultant force. 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 formula to find the work done by a particular force on an object is w equals f d cosine theta. The amount of energy transferred by a force is called the work done by that force.

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. Note that the work in this equation is the work done by the net force rather than the work done by an individual force. In other words w is telling you the amount of energy that the force f is giving to the object.

That is it doesn t change. The first is to find the net force that is the vector sum of all the forces that act on the particle. If there s no friction or another nonconservative force then me1 me2 or these equations represent the principle of conservation of mechanical energy. 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 change in the kinetic energy of an object is equal to the net work done on the object.