The bar has a mass of 8 kg and is suspended from two springs such that when it is in equ...

The bar has a mass of 8 kg and is suspended from two springs such that when it is in equilibrium, the springs make an angle of 45° with the horizontal as shown. Determine the natural period of vibration if the bar is pulled down a short distance and released. Each spring has a stiffness of k = 40 N/m.