Helicopter Hovering Air Speed · PhysicsBowl 2022 #19
Physics · fluid-mechanics
Problem
A helicopter with a mass of 700 kg will hover when its rotating blades move through an area of 50 m². Find the average speed imparted to the air (density of air = 1.3 kg/m³)
a. 7.66 m/s b. 10.4 m/s c. 16.5 m/s d. 38.0 m/s e. 44.1 m/s