The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.63 m and 1.01 m, respectively. The respective rotational speeds are 459 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor m/s tail rotor m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor = vsound vtail rotor = vsound

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