just need help with bullets 3 & 4

For the following system assuming m1-m2-5 kg, k1-k2-10 N/m and c1-c2-3 N/ms x1 K1 CI .Draw the FBD. Include all the forces an direction, and C2 M2 indicate the assumption you are doing. K2 Obtain the EOMs. -D . Solve the equations numerically with MAtlab .Use matlab/Simulink/simscape to obtain the 03 equivalent mass/spring/damper system and obtain a graph of the displacement that includes units and variable name