Two masses m1 and m2 are connected to each other by a rigid, massless horizontal rod of length /. Each of the masses are also connected by two springs of stiffness k. Assuming = 1 m, and m1 and m2 as point masses, find the sum of natural frequencies of vibration of the system (in rad/s) for m1 = 50 kg, m2 = 200 kg, and k = 1000 N/m. 00000000 x1(t) m1 00000000 x(t) Rigid, massless rod m2 8(t) 00000000 x2(1)