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A mass of 458 g stretches a spring by 7.2 cm. The damping constant is c = 0.34. External vibrations create a force of F(t)=
0.4 sin 5t Newtons, setting the spring in motion from its equilibrium position with zero velocity. What is the imaginary part v,
of the complex root of the homogeneous equation? Use g-9.8. Express your answer in two decimal places.

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