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A spring of force constant k is cut i...

A spring of force constant k is cut into three equal parts, which are joined in parallel to each other. The force constant of the combination will be :

A

k

B

3 k

C

9 k

D

k/3.

Text Solution

Verified by Experts

The correct Answer is:
C
Since spring is cut into 3 equal parts.
`:.` Spring constant of each part becomes 3k.
`:.` In parallel `k_(p)=k_(1)+k_(2)+k_(3)=3k+3k+3k=9k`.
Hence correct choice is ( c ).
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