Final answer:
The average power delivered by the driving force during one complete cycle is 60 W.
Step-by-step explanation:
The average power delivered by the driving force during one complete cycle is 60 W.
The average power is calculated by taking the time average of the instantaneous power over one cycle. In this case, the power swings from zero to 120 W one hundred twenty times per second (twice each cycle), and the power averages 60 W.
For example, if this process takes place continuously over a period of a year, the average power output would still be 60 W.