A system of springs with effective stiffness of k 8045 Nm s

A system of springs with effective stiffness of k = 8045 N/m supports a mass m = 12.1 kg. The mass is displaced by 15 mm and released. Question 13 What is the frequency of the resulting vibrations when the mass is released? (a) 0.2437 s (b) 25.79 Hz (c) 4.104 Hz (d) 4.104 rad/s (e) 25.79 rad/s

frequency=square root k/m

=square root 8025/12.1