A mass m = 2.0 kg is attached to a spring having a force constant k = 290 N/m as in the figure. The mass is displaced from its equilibrium position and released. Its frequency of oscillation (in Hz) is approximately
?
?
A. 12.
B. 0.50.
C. 0.010.
D. 1.9.
E. 0.080.
Answer: D
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