Answer: Consider the spring in Figure 46, but assume that because of friction and other

Chapter 4, Problem 31

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Consider the spring in Figure 46, but assume that because of friction and other resistive forces, the amplitude is decreasing over time, and that t seconds after the spring is released, its position in inches is given by the function s1t2 = -11e-0.2t cos 0.5pt. Graph the function on the interval 30, 124 by 3-12, 124, and determine the values for which the graph intersects the horizontal axis.

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