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A block of mass m=0.1 kg is connceted to...

A block of mass `m=0.1 kg` is connceted to a spring of unknown spring constant k. It is compressed to a distance x from its equilibrium position and released from rest. After approaching half the distance `((x)/(2))` from the euilibrium position, it hits another block and comes to rest momentarily, while the other block moves with velocity `3ms^(-1)`. The total initial energy of the spring is :

A

0.3 J

B

0.6 J

C

1.5 J

D

0.8 J

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