Solve the problem.A 10-pound weight stretches a spring 3 inches. The 10-pound weight is replaced by a 16-pound weight, and the system is allowed to come to equilibrium. The 16-pound weight is then raised 3 feet and released with an initial velocity of 5 feet per second downward. Find the equation of motion. Neglect friction.
A. y = 3 cos 8.944t + 3 sin 8.944t
B. y = -3 cos 8.944t + 0.559 sin 8.944t
C. y = -3 cos 2.582t + 1.936 sin 2.582t
D. y = 3 sin 8.944t + 0.559 cos 8.944t
Answer: B
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A. 
B. ?
C. ?
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