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One of the tail rotor blades of a helicopter has an unbalanced mass of m 0.5 kg at a distance of e=0.15 m from the axis of rotation as shown below. The tail boom has a length of 4 m, a mass of 240 kg, a flexural stiffness EI of 2.5 × 10^6 N-m^2 and a damping ratio of 0.15. The mass of the tail rotor blades. including their drive system, is 20 kg. Determine the forced response of the tail boom (displacement at the tail rotor shaft) when the blades rotate at 1500 RPM. Assume that the tail boom has uniform properties along its length. Tail rotor blades Tail section. El
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