The time the stone takes to reach the top of its flight path is 1.larger than 2.equal to 3.smaller than the time it takes to return from the top to its original position. Periodic Motion is any motion that repeats itself. The Period (T) is the time it takes for one complete cycle of motion. What is the period of rotation of the hour hand on a clock? The period of the reoccurrence of Monday is one week. What is Mondays frequency?