Answer :
No, work done on a system does not necessarily change the system's kinetic energy. Work is defined as the transfer of energy that occurs when a force is applied to an object and it undergoes a displacement in the direction of the force.
The work done on a system can result in changes in different forms of energy, including kinetic energy, potential energy, or internal energy.
Specifically regarding kinetic energy, work can change the kinetic energy of a system if it is associated with a net force acting on the object in the direction of its motion. In this case, the work done contributes to the change in the system's kinetic energy according to the work-energy theorem.
However, work can also be done on a system without directly affecting its kinetic energy. For example, if the applied force is perpendicular to the direction of motion, the work done would not change the kinetic energy but could affect other forms of energy, such as potential energy or internal energy. Additionally, work can be done to compress or expand a system, which would involve changes in potential or elastic energy rather than kinetic energy.
Therefore, while work done on a system can impact its kinetic energy, it is not necessarily the case that work always changes the system's kinetic energy. The specific circumstances and the nature of the applied force determine the type of energy affected by the work done on the system.
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