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Two blocks A(3 kg) and B(2 kg) resting o...

Two blocks `A(3 kg)` and `B(2 kg)` resting on a smooth horizontal surface is connected by a spring of stiffness `480N//m`. Initially the spring is under-formed and a velocity of `2 m//s` is imparted to A along the line of the spring away from B. The maximum extension in meters of the spring during subsequent motion is :-

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The correct Answer is:
0.8t + 0.12 sin 10t
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