A) \[\frac{k}{2}\]
B) k
C) 2k
D) k2
Correct Answer: C
Solution :
When spring constant is k and I is extension produced in spring when force F is applied, then \[F=-kl=mg\] When spring is cut into two parts, its length is halved \[\left( \frac{l}{2} \right)\] \[\therefore \] \[k=\frac{mg}{l/2}=2k\]You need to login to perform this action.
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