8096 Sun 4:49 PM a marks Window Help a edugen.wiley plus.com Mail thlg har Outlo

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8096 Sun 4:49 PM a marks Window Help a edugen.wiley plus.com Mail thlg har Outlook HW 8 I NEXT BACK PRINTER VERSION FULL SCREEN REsoURCES Chapter 15, Problem 094 .concent ZYour answer is partially correct. Try again. What is the phase constant for SMH with a(t) given in the figure if the position function (ty has the form x xmoos(et po and as 16 m/s2? (note that the answer should be from 0 to 2n) 1.31812 aick if you would like to show work for this question: open show work Version 4.21.1 All Rights Reserved

Explanation / Answer

x = xm cos(wt + phi)

a = d^2 x / dt^2 = - xm w^2 cos(wt + phi)

a / (xm w^2) = - cos(wt + phi)

at t= 0 ,

a / (xm w^2) = 4/16 = 0.25

0.25 = - cos(phi)

phi = n pi - 1.32

As answer should be in between 0 to 2n

then putting n = 1

phi = pi - 1.32 = 1.82 rad

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