The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.51 m and 1.00 m, respectively. The respective rotational speeds are 443 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 |