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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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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