1. The problem statement, all variables and given/known data A small fly of mass 0.29g is caught in a spider's web. The web oscillates predominately with a frequency of 4.4Hz . a) What is the value of the effective spring stiffness constant k for the web? b) At what frequency would you expect the web to oscillate if an insect of mass 0.50g were trapped? 2. Relevant equations f = (1/2Pi)(k/m)^.5 3. The attempt at a solution a) rearranging the equation k =m(2Pif)^2 = (.00029kg)(2Pi*4.4Hz)^2 = .22 N/m mastering physics says I am right on this one. So I figured for part b I just rearrange the equation for f and plug in .0005 for m and .22 for k f=(1/2Pi)(k/m)^.5 = (1/2Pi)(.22N/m/.0005kg)^.5 = 33Hz but mastering physics says i am wrong. Where is my mistake?