Work Energy Theorem Definition Physics

The work energy theorem is a generalized description of motion that states that the work done by the sum of all forces acting on an object is equal to the change in that object s kinetic energy. The work energy theorem can also be applied to an object s potential energy which is known as stored energy when a skier waits at the top of the hill before taking off they have potential. The physics definition of work is.

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This principle of work and its relationship to kinetic energy is a core mechanical physics concept.

Work energy theorem definition physics.

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 principle of work and kinetic energy also known as the work energy principle states that the work done by all forces acting on a particle the work of the resultant force equals the change in the kinetic energy of the particle. This definition can be extended to rigid bodies by defining the work of the torque and rotational kinetic energy. 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.

The work energy theorem is useful however for solving problems in which the net work is done on a particle by external forces is easily computed and in which we are interested in finding the particles speed at certain positions of even more significance is the work energy theorem as a starting point for a broad generalization of the concept. Understand how the work energy theorem only applies to the net work not the work done by a single source. For an object traveling at a speed v and with a mass m the kinetic energy is given by. If you re seeing this message it means we re having trouble loading external resources on our website.

Review the key concepts equations and skills for the work energy theorem.