A high-precision seismometer contains a sensor mass of 0.080 kg suspended from a support by two identical light vertical springs connected in parallel. Each spring has a stiffness of 9.0 N m-1. When the sensor is disturbed, the mass undergoes vertical oscillations of small amplitude. What is the frequency of these oscillations?
0.42 Hz0.42\text{ Hz}0.42 Hz
1.2 Hz1.2\text{ Hz}1.2 Hz
1.7 Hz1.7\text{ Hz}1.7 Hz
2.4 Hz2.4\text{ Hz}2.4 Hz