The blades of a helicopter used by the Royal Canadian Air Force are 9.15 m long and they need to achieve a full speed of 492 rpm, in order for the helicopter to lift off. Starting from rest, the blades need 2.50 seconds to achieve full speed. (a) What is the angular acceleration of the blades? (b) How many revolutions do they undergo, to reach full speed? (c) With what velocity does the tip of one blade spin, at full speed?
