?A mass that weighs 8 lb stretches a spring 6 inches. The system is acted on by an
Chapter 7, Problem 98(choose chapter or problem)
A mass that weighs 8 lb stretches a spring 6 inches. The system is acted on by an external force of 8sin8t lb. If the mass is pulled down 3 inches and then released, determine the position of the mass at any time.
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