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A spring of natural length l is compres...

A spring of natural length `l` is compressed vertically downward against the floor so that its compressed lengtg becomes `(1)/(2)`. On releasing, the spring attins its natural length. If `k` is the siffness constant of spring, then the work done by the spring on the floor is

A

`zero`

B

`1/2kl^(2)`

C

`(1)/(2)k((l^(2))/(2))`

D

`kl^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Displacement of floor `=0`.
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