1.

The length of an elastic string is ametres when the longitudinal tension is 4 N and bmetres when the longitudinal tension is 5 N. The length of the string in metres when the longitudinal tension is 9 N is

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The length of an elastic string is ametres when the longitudinal tension is 4 N and bmetres when the longitudinal tension is 5 N. The length of the string in metres when the longitudinal tension is 9 N is



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