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According to this theorem, the net work done on a body is equal to the change in kinetic energy of the body. This is known as Work-Energy Theorem. It can be represented as: K f – K i = W. Where K f = Final kinetic energy. K i = Initial kinetic energy. W = net work done.
The Work–Energy Theorem. In physics, the term work has a very specific definition. Work is application of force, f f, to move an object over a distance, d, in the direction that the force is applied. Work, W, is described by the equation. W = fd. W = f d.
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. This definition can be extended to rigid bodies by defining the work of the torque and rotational kinetic energy.
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.
The work-energy theorem states that the net work \(W_{net} \) on a system changes its kinetic energy, \(W_{net} = \frac{1}{2}mv^2 - \frac{1}{2}mv_0^2\).
Work-Energy Theorem argues the net work done on a particle equals the change in the particle’s kinetic energy. According to this theorem, when an object slows down, its final kinetic energy is …
The work-energy theorem says that this equals the change in kinetic energy: − m g ( y f − y i ) = 1 2 m ( v f 2 − v i 2 ) . − m g ( y f − y i ) = 1 2 m ( v f 2 − v i 2 ) . Using a right triangle, we can see that ( y f − y i ) = ( s f − s i ) sin θ , ( y f − y i ) = ( s f − s i ) sin θ , so the result for the final speed is ...
The work-energy theorem, also called the principle of work, and kinetic energy states that the total work done by calculating the sum of all the forces acting on a particle is equal to the change in the kinetic energy of that particle.
The work-energy theorem explains the idea that the net work - the total work done by all the forces combined - done on an object is equal to the change in the kinetic energy of the object.
If you transfer a certain amount of energy to an object in motion, what will happen to it? Can you measure the amount of energy in terms of work? How much work does it take to launch a satellite into space? Let us find out the Work-Energy Theorem and answer these questions!