"A seismograph detects vibrations caused by seismic movements. To model this system, it is assumed that the structure undergoes a vibration with a known amplitude band frequency w (rad/s), such that its vertical displacement is given by xB=bsin(wt). This movement of the structure will produce a relative acceleration in the mass m of 2 kg, whose displacement 2 will be plotted on a roller." x= 15 kN/m Structure -WI 24 mm (Ctrl) sin(wt) b(w/w)² √√1 (w/w)] + [25(w/w)]²' "The seismograph's roller measures 60 mm, and a maximum vibration amplitude of the structure of b<5 mm is expected. Design the damper (constant c) to ensure that, for a constant oscillation, the seismograph functions correctly and the needle does not move off the roller."

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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"A seismograph detects vibrations caused by seismic movements. To model this system, it is
assumed that the structure undergoes a vibration with a known amplitude band frequency w (rad/s),
such that its vertical displacement is given by xB=bsin(wt). This movement of the structure will
produce a relative acceleration in the mass m of 2 kg, whose displacement 2 will be plotted on a
roller."
x=
15 kN/m
Structure
-WI
24 mm
(Ctrl)
sin(wt)
b(w/w)²
√√1 (w/w)] + [25(w/w)]²'
"The seismograph's roller measures 60 mm, and a maximum vibration amplitude of the structure of
b<5 mm is expected. Design the damper (constant c) to ensure that, for a constant oscillation, the
seismograph functions correctly and the needle does not move off the roller."
Transcribed Image Text:"A seismograph detects vibrations caused by seismic movements. To model this system, it is assumed that the structure undergoes a vibration with a known amplitude band frequency w (rad/s), such that its vertical displacement is given by xB=bsin(wt). This movement of the structure will produce a relative acceleration in the mass m of 2 kg, whose displacement 2 will be plotted on a roller." x= 15 kN/m Structure -WI 24 mm (Ctrl) sin(wt) b(w/w)² √√1 (w/w)] + [25(w/w)]²' "The seismograph's roller measures 60 mm, and a maximum vibration amplitude of the structure of b<5 mm is expected. Design the damper (constant c) to ensure that, for a constant oscillation, the seismograph functions correctly and the needle does not move off the roller."
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