[填空题]
A fisherman’s scale stretches 3.6 chx )yu..x:v1j/0c*fuoy senem when a 2.7-kg fish hangs from it. . 7po eg9vgt 6oqpxvmn39tg(2(a) What is the spring stiffness coep2 q99tgogntgxo 6 (pv7mv3.nstant $\approx$ N/m
(b) what will be the amplitude and frequency of vibration if the fish is pulled down 2.5 cm more and released so that it vibrates up and down? $\approx$ Hz (round to one decimal place)