To find the time it takes for the blades to make one revolution, we can use the formula for the period of circular motion. The period (T) is the time it takes for an object to complete one full revolution or one cycle of motion.
The formula for the period is given by:
T = (2πr) / v
where r is the radius of the circular path and v is the linear velocity of the object.
Given: Radius (r) = 0.053 m Linear velocity (v) = 21 m/s
Now we can calculate the period (T):
T = (2πr) / v = (2π * 0.053 m) / 21 m/s ≈ 0.318 s
Therefore, it takes approximately 0.318 seconds for the blades to make one revolution.