My first step was 3.1/9 because for nine cycles it takesT=3.1s which equals .344

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My first step was 3.1/9 because for nine cycles it takesT=3.1s which equals .344444 repeating and rounded it to .34 Then using the formula T=2m/k' So I set up 0.34=2351/2k then, 0.1156s2 =(42)*(351kg)/2k then,k=(4)*(2)*(351)/(2)*(0.1156) then I got k=59934.7949 and entered this as my first answerthen my second answer I rounded it to 59935 N/m The last answer I entered was based off of rounding.3444 repeating to .3 and squaring this and getting 0.18 then usethis in the k=(4)*(2)*(351)/0.18 and gotk=76982.91433 and rounded it to 76983 N/m This was wrong also, am I not rounding correctly or doing theproblem wrong? Can someone help? then I got k=59934.7949 and entered this as my first answerthen my second answer I rounded it to 59935 N/m The last answer I entered was based off of rounding.3444 repeating to .3 and squaring this and getting 0.18 then usethis in the k=(4)*(2)*(351)/0.18 and gotk=76982.91433 and rounded it to 76983 N/m This was wrong also, am I not rounding correctly or doing theproblem wrong? Can someone help?

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