Question: A given system of unknown mass in and spring constant k was observed to oscillate harmonically in free vibration with the natural period T = 2π x 10-2 s. When a mass M = 0.9 kg was added to the system (Fig. 2.17) the new period rose to T* = 2.5π x 10-2 s. Determine the system parameters m and k.
![2486_2.17.png](https://secure.tutorsglobe.com/CMSImages/2486_2.17.png)