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?​

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.