A mass weighing 16 pounds stretches a spring 83 feet. The mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1 2 the instantaneous velocity. Find the equation of motion x(t) if the mass is driven by an external force equal to f(t) = 20 cos(3t). (Use g = 32 ft/s2 for the acceleration due to gravity.)

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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A mass weighing 16 pounds stretches a spring 83
feet. The mass is initially released from rest from a
point 2 feet below the equilibrium position, and the
subsequent motion takes place in a medium that
offers a damping force that is numerically equal to 1
2 the instantaneous velocity. Find the equation of
motion x(t) if the mass is driven by an external force
equal to f(t) = 20 cos(3t). (Use g = 32 ft/s2 for the
acceleration due to gravity.)
Transcribed Image Text:A mass weighing 16 pounds stretches a spring 83 feet. The mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1 2 the instantaneous velocity. Find the equation of motion x(t) if the mass is driven by an external force equal to f(t) = 20 cos(3t). (Use g = 32 ft/s2 for the acceleration due to gravity.)
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