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12. A bbck is connected to a spring and hung vertically. The block s set into motion and a short time later, a sequence of nine snapshots is recorded (the photos are taken at reguar time intervas) These snapshots are arranged side-by-sile below. At what instant in time is the bbck experiencing the largest magnitude acceleration? 1-0 1-1 1-2 1-3-4 1-5 1-6 1-7-8 A. 1-2 B. 1-5 C. t=4 D. I=8 E, t=1

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Answer #1

The block has its maximum acceleration at the maximum elongation of the spring. Therefore

Answer (A). t = 2

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