As per given figures, two springs of spring constants \( k \) and \( 2k \) are connected to mass \( m \). If the period of oscillation in figure (a) is \( 3 \, \text{s} \), then the period of oscillation in figure (b) will be \( \sqrt{x} \, \text{s} \). The value of \( x \) is __________.
![]()
