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Two springs have force constants k(A) su...

Two springs have force constants `k_(A)` such that `k_(B)=2k_(A)`. The four ends of the springs are stretched by the same force. If energy stored in spring `A` is `E`, then energy stored in spring `B` is

A

2E

B

`E/4`

C

`E/2`

D

`4E`

Text Solution

Verified by Experts

The correct Answer is:
A
`E=(kx^2)/2 =(k^2x^2)/(2k) rArr E=f^2/(2k)`
`because` Force is equal `therefore E prop 1/k`
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