Question: A 45-kg machine is placed at the end of a 1.6-m cantilever beam of elastic modulus of 200 X 109 N... A 45-kg machine is placed at the end of a 1.6-m cantilever beam of elastic modulus of 200 X 109 N/m2 , cross-sectional moment of inertia 1.6 X 10-5 m4 and negligible damping. As it operates, the machine produces a harmonic force of magnitude 125 N. At what operating speeds will the machine’s steady-state amplitude be less than 0.2 mm?​