Question: For a unity negative feedback control system with open loop transfer function L ( s ) = s ( s + 1 ) where K

For a unity negative feedback control system with open loop transfer function L(s)= s(s+1) where K>0.(a) Determine the condition on K so that the system is stable. (b) Determine the condition on K so that the closed-loop system is stable and has a phase margin that is greater than 30 deg.

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