A block of 9.0 kg is attached to three springs through a mas…
A block of 9.0 kg is attached to three springs through a mass-less bar as shown above. The springs have spring constants of k1, k2, and k3 of 120 N/m, 240 N/m, and 360 N/m, respectively . If the block is shifted by 6.0 cm and let go, what is the frequency (in Hz) of this simple harmonic oscillator?