Control System-Analyze the Performance of a DC motor with Amplifier in Matlab

Given a simple DC motor with amplifier diagram, the task is to evaluate the performance of this closed-loop control system using only proportional controller, not a PID controller. The following are the tasks that need to be done: 1) Produce a SIMULINK model for the DC motor and amplifier. 2) Select 3 different gains to obtain <10% overshoot, <25% overshoot, and with small steady state error. (For example: try Ka = 50 volts/volts and see happens.) 3) Simulate the system using the chosen gains. Use appropriate overlay 4) Chose a desirable gain (therefore you must define what is the acceptable performance), and perform parameter sensitivity analysis. Bid only if you really know how to do this as this will need to be completed in the next two days.