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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.
- 7.2: Kinetic Energy and the Work-Energy Theorem
The work-energy theorem states that the net work \(W_{net}...
- 7.4: Work-Energy Theorem - Physics LibreTexts
Work-Energy Theorem argues the net work done on a particle...
- 7.2: Kinetic Energy and the Work-Energy Theorem
This video explains the work energy theorem and discusses how work done on an object increases the object’s KE.
The work-energy theorem states that the net work \(W_{net} \) on a system changes its kinetic energy, \(W_{net} = \frac{1}{2}mv^2 - \frac{1}{2}mv_0^2\).
Learn more about work and energy in this PhET simulation called “the ramp.” Try changing the force pushing the box and the frictional force along the incline. The work and energy plots can be examined to note the total work done and change in kinetic energy of the box.
The quantity 1 2 mv 2 1 2 mv 2 in the work-energy theorem is defined to be the translational kinetic energy (KE) of a mass m m moving at a speed v v. ( Translational kinetic energy is distinct from rotational kinetic energy, which is considered later.)
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 …
There is a direct connection between the work done on a point-like object and the change in kinetic energy the point-like object undergoes. If the work done on the object is non-zero, this implies that an unbalanced force has acted on the object, and the object will have undergone acceleration.
