[填空题]
A small fly of mass 0. fq m3yk:p8; 6mtfuy1g25 g is caught in a spider’s web. The web vibrates p+hsl 68eandk060j: 9pn/nhixhcuz 1hredominately with a frequency of 4.h69n+u:e klz1c dx0jhp i86nsh0/n ha0 Hz.
(a) What is the value of the effective spring stiffness constant k for the web?$\approx$ N/m (round to two decimal place)
(b) At what frequency would you expect the web to vibrate if an insect of mass 0.50 g were trapped? Hz