A cylinder of mass m=3 {kg} and radius {R}=2 {m} is attached to a massless spring-pulley system as shown in the figure and all the springs are in their natural length at t=0 . The friction is sufficient to cause pure rolling of the cylinder. What is the time period (in sec.) of cylinder for small horizontal displacement? (spring constant {k}=2 {N} \/ {m} and \pi=3.14)