A dentist's drill is used to fix problems with your teeth. Suppose that a doctor increases the angular speed of his drill from 0.12 rev/s to 1.15 rev/s. What is the average angular speed of the drill?
The average angular speed is the average of the initial and final angular speeds.
average angular speed = (0.12 rev/s + 1.15 rev/s)/2
= 0.635 rev/s
Therefore, the average angular speed of the drill is 0.635 rev/s.
To find the average angular speed of the drill, we need to find the change in angular speed and divide it by the change in time.
Change in angular speed = Final angular speed - Initial angular speed
Change in angular speed = 1.15 rev/s - 0.12 rev/s = 1.03 rev/s
The average angular speed is the change in angular speed divided by the change in time. However, we are not given the change in time in this question. Without the time interval, we cannot accurately calculate the average angular speed.