A machine of mass 100 kg with a rotatingunbalance of 0.4 kg.m is placed at the midspanof a 2m long simply supported beam. Themachine operates at a speed of 1100 rpm. Thebeam has an elastic modulus of 210*10^9 N/m2and a cross-sectional moment of inertia of2.1*10^-6 m4.Whats is the steady-state amplitude of theprimary system without an absorber? Answermm.We want to design the dynamic vibrationabsorber of minimum mass such that, whenattached to the midspan of the beam, thevibrations of the beam will cease and the steady-state amplitude of the absorber will be less than30 mm.Ka = AnswerkN/m.ma = AnswerKg.

Given:mass of machine, m1=100 kgUnbalancing, moe=0.4 kg-mlength of beam, l=2 mspeed, N=1100…

A machine of mass 100 kg with a rotating unbalance of 0.4 kg.m is placed at the midspa of a 2m long simply supported beam. The machine operates at a speed of 1100 rpm. Th beam has an elastic modulus of 210*10^9 N/r and a cross-sectional moment of inertia of 2.1*10^-6 m4.

A machine of mass 100 kg with a rotating unbalance of 0.4 kg.m is placed at the midspa of a 2m long simply supported beam. The machine operates at a speed of 1100 rpm. Th beam has an elastic modulus of 21010^9 N/r and a cross-sectional moment of inertia of 2.110^-6 m4.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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