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[" A spring of force constant "k" is cut...

[" 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 : - "],[[" (1) "1:9," (2) "1:11],[" (3) "1:14," (4) "1:16]]

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