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One end of a light spring of spring cons...

One end of a light spring of spring constant k is fixed to a wall and the other end is tied to a block placed on a smooth horizontal surface. In a displacement, the work done by the spring is `+(1/2)kx^(2)`. The possible cases are.

A

The spring was initially stretched by a distance x and finally was in its natural length

B

The spring was initially in its natural length and finally it was compressed by a distance x.

C

The spring was initially compressed by a distance x and finally was in its natural length

D

The spring was initially in its natural length and finally stretched by a distance x.

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The correct Answer is:
A, C
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