and a can be found; thus determining all the constants of the equation. The magnitude of the dynamical force acting on the spring is given by, F=f sm n t (6) By substituting values of t in these equations, the motion of the spring can be plotted. By the use of Fourier's series the effect of a… … THE EFFECT OF NATURAL PERIOD ON RESPONSE TO SHOCKS. In figure 6 is plotted a curve of acting force rising to a maximum harmonically in 0.025 second. On the same sheet are plotted the motions of two similar springs, except that one has a period of one-twentieth second and the other a period of…
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