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Homework Help: Transfer function of a second order system

  1. Nov 28, 2016 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations
    3. The attempt at a solution
    I have done question 1.18 and I understand it completely. However, for question 2.5, I do not understand how they got G(s)? Why isn't the G(s) in question 2.5 the same as G(s) at the bottom of question 1.18? I asked my lecturer and she spent about 10 minutes trying to figure out and eventually said that the answer for question 2.5 is a mistake and that G(s) should've been as in question 1.18. I just want to make sure whether she is right in saying this? Is G(s) in the answer for question 2.5 indeed a mistake? She seemed a bit unsure hence why I am checking on here. The same method (like question 2.5) has been used to calculate transfer function in subsequent questions.

    Last edited by a moderator: May 8, 2017
  2. jcsd
  3. Dec 2, 2016 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    It's obvious - G(s) should be the same in 1.18 and 2.5.
    She probably seemed befuddled trying to figure out how she could have made the mistake.
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