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This video explains the work energy theorem and discusses how work done on an object increases the object’s KE.
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.
22 Δεκ 2020 · Also known as the work-energy principle, the work-energy theorem states that the total amount of work done on an object is equal to its change in kinetic energy (the final kinetic energy minus the initial kinetic energy).
If a force is applied to a moving body over some distance, then work is done on the body, causing a change in its kinetic energy. The change in kinetic energy of the body is equal to the amount of work done. This result is called the work-energy theorem: \[W=\Delta K\]
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 …
Work-energy theorem: The net/total work done on an object is equal to the change in the object’s kinetic energy. In symbols: Wnet = ∆ EK Wnet = 1 2m(vf 2 - v i 2) Conservative force: The work done by the force in moving an object between 2 points is independent of the path taken ex. gravitational, electrostatic and elastic forces.
Work-energy principle for angular quantities. The rate of doing work is equal to the rate of using energy since the force transfers one unit of energy when it does one unit of work. A horsepower is equal to 550 ft lb/s, and a kilowatt is 1000 watts. Index. Example.
