A spring of force constant k is cut into lengths of ratio 1 : 2 : 3. They are connected in series and the new force constant is k'. Then they are connected in parallel and force constant is k''. Then k' : k'' is :

Question

Dr. Abubacker · Accepted Answer

[Solution] Pieces have constants 6k, 3k, 2k. Series gives back k; parallel gives 11k. Ratio 1 : 11. Answer (3).

Q. A spring of force constant k is cut into lengths of ratio 1 : 2 : 3. They are connected in series and the new force constant is k'. Then they are connected in parallel and force constant is k''. Then k' : k'' is :

Explanation

Reviewed by Dr. Abubacker

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