The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 1.01 m, respectively. The respective rotational speeds are 457 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor 181.75 m/s tail rotor 221.53 m/s Calculate the time (in ms) each rotor takes to complete one revolution. main rotor 0.53 * ms tail rotor 0.65 X msHuman centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s') without losing consciousness. HINT (a) If a human centrifuge has a radius of 5.11 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g? 4.15 As always, the centripetal acceleration of a person in the centrifuge is directed radially inward, toward the center of the circular path. rad/s (b) What linear speed (in m/s) would a person in the centrifuge have at this acceleration? 21.21 m/s (c) How long does it take the human centrifuge to complete 3.0 revolutions? S (d) What distance does the centrifuge dover in 3.0 revolutions? m