Answer: A mass that weighs 8 lb stretches a spring 6 in. The system is acted on by an
Chapter 3, Problem 10(choose chapter or problem)
A mass that weighs 8 lb stretches a spring 6 in. The system is acted on by an external force of 8 sin 8t lb. If the mass is pulled down 3 in and then released, determine the position of the mass at any time. Determine the first four times at which the velocity of the mass is zero.
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