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QUESTION 1 (25 marks) Consider a mass spring and damper system as shown in Figure Q1. Determine the followings: a) The natural frequency of the system @, (4 marks) b) Critical damping coefficient Ce (2 marks) c) Damping ratio and type of damping conditions (2 marks) d) Damped natural frequency (), (2 marks) e) Equation for displacement y in terms of time f or y= f(1). (15 marks) W = 60N k = 900N/m c = 12Ns/m d = 0.2m Figure Q1