The step demand made to a temperature control system is 100°C. The
controlled temperature before the step is applied is 0°C.
Estimate the system's
(a) percentage overshoot
(b) settling time
(c) damping ratio (refer to the nominalised second-order step response)​

plz help me to solve this as the percentage overshoot will be 60% but i do not know the proper formula​

 

You need more than just the formulas. It sounds like a 2nd order equation. What is the transfer function?

Were you given the percent overshoot? It was one of your 3 questions, and then you stated it as fact.