OUESTİON 2: (30 points) tp() Write the equation of motion for the SDOF system by taking the displacement coordinate to be the vertical displacement Z(t) at B. The system is rigid bar having uniformly distributed mass m 4 m 丯k Two concentrated masses m 2ma are located at B and C. The spring and damper are weightless. Assume that all displacements are small. Determine the natural period of the system. OUESTİON 2: (30 points) tp() Write the equation of motion for the SDOF system by taking the displacement coordinate to be the vertical displacement Z(t) at B. The system is rigid bar having uniformly distributed mass m 4 m 丯k Two concentrated masses m 2ma are located at B and C. The spring and damper are weightless. Assume that all displacements are small. Determine the natural period of the system.