Mass on a Spring: A 4.8-kg block attached to an ideal spring executes simple harmonic motion on a frictionless horizontal surface. At time t = 0.00 s, the block has a displacement of -0.90 m, a velocity of -0.80 m/s, and an acceleration of +2.9 m/s2. The force constant (spring constant) of the spring is closest to
A. 15 N/m.
B. 14 N/m.
C. 13 N/m.
D. 12 N/m.
E. 11 N/m.
Answer: A
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