Question

Find the net work W done on the particle by the external forces during the motion of the particle in terms of the initial and final kinetic energies.

Answer 1

The net work done on a particle by external forces is equal to the change in the particle's kinetic energy, represented as Wnet = KB - KA, according to the work-energy theorem.

Step-by-step explanation:

To find the net work (W) done on a particle by external forces during its motion, we can use the work-energy theorem. This theorem posits that the net work done on a system results in a change in the system's kinetic energy. In mathematical terms, this can be expressed as Wnet = KB - KA, where KB and KA represent the final and initial kinetic energies, respectively.

By understanding this principle, we can equate the total work done by all external forces to the change in kinetic energy of the particle. If the total work is positive, the particle's kinetic energy has increased, indicating acceleration. Conversely, if the total work is negative, the particle's kinetic energy has decreased, indicating deceleration.