Which one among the following happens when a swing rises to a certain height from its rest position ?

A swing functions as a pendulum, demonstrating the principle of conservation of mechanical energy. When a swing rises from its rest position (the lowest point) toward a certain height, its velocity gradually decreases while its height increases. Kinetic energy, which is the energy of motion, is directly proportional to the square of the velocity; thus, as the swing slows down during its ascent, its kinetic energy decreases. Conversely, gravitational potential energy is determined by an object's height above a reference point. As the swing gains height, its potential energy increases, reaching a maximum at the highest point of the oscillation where the swing momentarily stops. This continuous transformation between kinetic and potential energy ensures that the total mechanical energy remains constant, excluding losses due to friction or air resistance.