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<p>A block of a mass 2 kg is attached with two identical springs of spring constant 20 N/m each. The block is placed on a frictionless surface and the ends of the springs are attached to rigid supports (see figure). When the mass is displaced from its equilibrium position, it executes a simple harmonic motion. The time period of oscillation is&nbsp;<span class="equation">\(\frac{\pi}{\sqrt{x}}\)</span>​​​​​​​ &nbsp;in SI unit. The value of&nbsp; x is ____________.</p>