A 3-lb block is supported as shown by a spring of constant
Chapter 19, Problem 19.11(choose chapter or problem)
A 3-lb block is supported as shown by a spring of constant k 5 2 lb/in. which can act in tension or compression. The block is in its equilibrium position when it is struck from below by a hammer which imparts to the block an upward velocity of 90 in./s. Determine (a) the time required for the block to move 3 in. upward, (b) the corresponding velocity and acceleration of the block.
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