A 32 lb weight is attached to the end of a spring with constant k = 9 lb/ft and subjected to an external force F(t) = 8 sin t lb. The weight is initially displaced 6 inches above equilibrium and given an upward velocity of 2 ft/sec. Find the equation of motion. Ou(t)=sin(t) Ou(t) = sin(t) - sin (3t) - Ou(t) = 3 sin (t) - 2 sin (3t) - cos(3t) Ou(t)=2 sin (t) - 3 sin (3t) - cos (3) - sin(3t) - cos (3t) 9 cos (3t)

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.7: Applications
Problem 18EQ
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A 32 lb weight is attached to the end of a spring with constant k = 9 lb/ft and
subjected to an external force F(t) = 8 sin t lb. The weight is initially displaced
6 inches above equilibrium and given an upward velocity of 2 ft/sec. Find the
equation of motion.
○u(t)
Ou(t)= sin(t)
sin(3) - cos (31)
sin(3t) cos (3)
Ou(t)=sin(t)
Ou(t)=3 sin (t) - 2 sin (3) -
Ou(t)=2 sin (t) - 3 sin (3t)
-
cos(3t)
cos (31)
Transcribed Image Text:A 32 lb weight is attached to the end of a spring with constant k = 9 lb/ft and subjected to an external force F(t) = 8 sin t lb. The weight is initially displaced 6 inches above equilibrium and given an upward velocity of 2 ft/sec. Find the equation of motion. ○u(t) Ou(t)= sin(t) sin(3) - cos (31) sin(3t) cos (3) Ou(t)=sin(t) Ou(t)=3 sin (t) - 2 sin (3) - Ou(t)=2 sin (t) - 3 sin (3t) - cos(3t) cos (31)
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