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A body of 5 kg hangs from a spring and o...

A body of 5 kg hangs from a spring and oscillates with a time period of `2pi` s. If the body is removed, the length of the spring will decrease by :

A

`(k)/(g)` meter

B

g metre

C

`(g)/(k)` metre

D

none of these.

Text Solution

Verified by Experts

The correct Answer is:
B
`T=2pi sqrt((m)/(k))`
`:." "2pi=2pi sqrt((5)/(k))`
`implies" "k=5" Nm"^(-1)`.
Now F = kl.
`implies" "l=(F)/(k)=(5xx8)/(5)`
l = g metre.
Hence correct choice is (b).
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