An undamped spring-mass system with a mass weighing 9 lb and a spring constant of 6 lb/in is set in motion at t = 0 by an external force of 4 cos 9t lb. Find the position u (in feet) at any time t (in seconds). u(t) = Assume that acceleration due to gravity is 32ft/s².
An undamped spring-mass system with a mass weighing 9 lb and a spring constant of 6 lb/in is set in motion at t = 0 by an external force of 4 cos 9t lb. Find the position u (in feet) at any time t (in seconds). u(t) = Assume that acceleration due to gravity is 32ft/s².
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![An undamped spring-mass system with a mass weighing 9 lb and a spring constant of
6 lb/in is set in motion at t = 0 by an external force of 4 cos 9t lb. Find the position u (in feet)
at any time t (in seconds).
u(t) =
Assume that acceleration due to gravity is 32ft/s².](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F216015d9-daff-4e98-b3d1-7f3f5202e820%2F931cdd7f-30c8-4e7a-bd7d-81f3d3f5fb9a%2Fvrz1i3_processed.png&w=3840&q=75)
Transcribed Image Text:An undamped spring-mass system with a mass weighing 9 lb and a spring constant of
6 lb/in is set in motion at t = 0 by an external force of 4 cos 9t lb. Find the position u (in feet)
at any time t (in seconds).
u(t) =
Assume that acceleration due to gravity is 32ft/s².
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